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OPTOELECTRONICS 

HANDBOOK 



■ 



NATIONAL 
SEMICONDUCTOR 





MOI7CCVII 



OPTOELECTRONICS 

HANDBOOK 

NATIONAL 
SEMICONDUCTOR 




National Semiconductor Corporation 2900 Semiconductor Drive. Santa Clara, California 95051 Tel: (408) 737-5000 TWX: (910) 339-9240 

National does not assume any responsibility tor use of any circuitry described: no circuit patent licenses are implied: and National reserves the right, at any time without notice, to change said circuitry. 



Table of Contents 

Introduction 1 

Discrete LED Lamps 

Introduction 3 

Quick Selection Matrix 3 

Lamp Selection Guide. 4 

LED Lamp Package Outlines 5 

Mounting Techniques 7 

LED Lamp Cross Reference 8 

NSL4944 Current Regulated, Universal LED Lamp 12 

NSL5020 Series Red LED Lamps 14 

NSL5040 Series Red LED Lamps 16 

NSL5050 Series Red LED Lamps 18 

NSL5058 Red Diffused Lens LED Lamp 20 

NSL5070 Series T-1 Size Red LED Lamps 22 

NSL5080 T-1 Size Red LED Lamps 24 

NSL5250 Series Green LED Lamps 26 

NSL5274 T-1 Size Green LED Lamp 28 

NSL5350 Series Yellow LED Lamps. 29 

NSL5374 T-1 Size Yellow LED Lamp 31 

NSL5750 Series High Efficiency Red LED Lamps 32 

NSL5774 T-1 Size High Efficiency Red LED Lamp 34 

NSL521 24 0.220" Green Rectangular Legend Lamp 35-1 

NSL53124 0.220" Yellow Rectangular Legend Lamp 

NSL57124 0.220" High Efficiency Red Rectangular Legend Lamp 

NSL6050 Water-Clear Lens 35-3 

NSL6051 Milk-White Diffused Lens 

NSL6052 Red Transparent Lens 

NSL6053 Light Red Diffused Lens 

NSL6055 Red Diffused Lens, Wide Viewing Angle 

NSL6056 Dark Red Diffused Lens 

NSL6152 Orange Emitter, Transparent Orange Lens 35-5 

NSL6252 Green Emitter, Transparent Green Lens 

NSL6352 Yellow Emitter, Transparent Yellow Lens 

NSL6752 Orange-Red Emitter, Transparent Red Lens 

NSL6153 Orange Emitter — Diffused Orange Lens 35-7 

NSL6154 Orange Emitter — Lightly Diffused Orange Lens 

NSL6253 Green Emitter — Diffused Green Lens 

NSL6254 Green Emitter — Lightly Diffused Green Lens 

NSL6353 Yellow Emitter — Diffused Yellow Lens 

NSL6354 Yellow Emitter — Lightly Diffused Yellow Lens 

NSL6753 Orange-Red Emitter — Diffused Red Lens 

NSL6754 Orange-Red Emitter — Lightly Diffused Red Lens 

MV5050 Water-Clear Lens 35-9 

MV5051 Milk-White Diffused Lens 

MV5052 Red Transparent Lens 

MV5053 Light Red Diffused Lens 

MV5055 Red Diffused Lens, Wide Viewing Angle 



Table of Contents 



(Continued) 



MV5056 Dark Red Diffused Lens 

MV5152 Orange Emitter, Transparent Orange Lens 35-1 1 

MV5252 Green Emitter, Transparent Green Lens 

MV5352 Yellow Emitter, Transparent Yellow Lens 

MV5752 Orange-Red Emitter, Transparent Red Lens 

MV5153 Orange Emitter — Diffused Orange Lens 35-13 

MV5154 Orange Emitter — Lightly Diffused Orange Lens 

MV5253 Green Emitter — Diffused Green Lens 

MV5254 Green Emitter — Lightly Diffused Green Lens 

MV5353 Yellow Emitter — Diffused Yellow Lens 

MV5354 Yellow Emitter — Lightly Diffused Yellow Lens 

MV5753 Orange-Red Emitter — Diffused Red Lens 

MV5754 Orange-Red Emitter — Lightly Diffused Red Lens 

MV52124 0.220" Green Rectangular Legend Lamp 35-15 

MV53124 0.220" Yellow Rectangular Legend Lamp 

MV57124 0.220" High Efficiency Red Rectangular Legend Lamp 

AN-153 Constant Current LED 37 

LED Numeric Arrays 

Introduction 41 

LED Numeric Array Selection Guide 42 

LED Numeric Array Cross Reference 43 

NSA0028, NSA0038 0.100 Inch (2.54 mm) LED Numeric Arrays 44 

NSA500 Series 0.100 Inch (2.54 mm) LED Numeric Arrays 46 

NSA1100 Series 0.100 Inch (2.54 mm) 9-Digit LED Numeric Arrays 50 

NSA1298A 0.110 Inch (2.794 mm) 9-Digit LED Numeric Array 54 

NSA1541A 0.140 Inch (3.556 mm) 4-Digit LED Numeric Array 56 

NSA1588A 0.140 Inch (3.556 mm) 8-Digit LED Numeric Array 58 

NSA5140A 0.110 Inch (2.79 mm) 14-Digit LED Numeric Array 60 

NSA7120 0.110 Inch (2.794 mm) 12-Digit LED Numeric Array 62 

Multidigit LED Numeric Displays 

Introduction 65 

Multidigit LED Numeric Display Selection Guide 66 

Multidigit LED Numeric Display Cross Reference. 67 

NSB5388 3 1/2-Digit 0.5 Inch (12.70 mm) DVM Display 68 

NSB5415 4 1/2-Digit 0.5 Inch (12.70 mm) DVM Display 72 

NSB5917, NSB5921, NSB5922 0.5 Inch (12.70 mm) 5 Digit Numeric Displays 75 

NSB5918 3 3/4-Digit 0.5 Inch (12.70 mm) LED Display 77 

NSB5931 0.5 Inch (12.70 mm) 6-Digit Common Cathode GaAsP Display 81 

NSB7400, NSB7401, NSB7402, NSB7403, NSB7404, NSB7405 

0.7 Inch 4-Digit LED Duplex Clock Displays 83 

NSN3XX, NSB3XXX 0.3" Multidigit LED Numeric Display Series 87 

NSN5XX, NSB5XXX 0.5" Multidigit LED Numeric Display Series 93 

NSN7XX, NSB7XXX 0.7" Multidigit LED Numeric Display Series 99 

AN-170 Mounting Techniques for Multidigit LED Numeric Displays. 105 



Table of Contents (continued) 



Integrated Displays 

Introduction 111 

NSM3914, NSM3915, NSM3916 End Stackable LED Bar Graph Array with Driver. 112 

NSM4000A LED Display with Driver 116 

Interface 

User Guide-Array Drivers 121 

User Guide-Display Drivers 121 

ADD3501 3 1/2-Digit DVM with Multiplexed 7-Segment Output 122 

ADD3701 3 3/4-Digit DVM with Multiplexed 7-Segment Output 123 

CD4511BM/CD4511BC BCD-to-7-Segment Latch/Decoder/Driver 124 

DM5446A/DM7446A, DM5447A/DM7447A, DM54LS47/DM74LS47, DM54LS48/DM74LS48, 

DM54LS49/DM74LS49 BCD/7-Segment Decoders/Drivers 125 

DS75491 MOS-to-LED Quad Segment Driver 126 

DS75492 MOS-to-LED Hex Digit Driver 126 

DS55493/DS75493 Quad LED Segment Driver 127 

DS8669 2-Digit BCD-to-7-Segment Decoder/Driver 128 

DS8692, DS8693, DS8694 Printing Calculator Interface Set 129 

DS7856/DS8856, DS8857, DS7858/DS8858 BCD-to-7-Segment LED Drivers 130 

DS8859, DS8869 Open Collector Hex Latch LED Drivers 131 

DS8861 MOS-to-LED 5-Segment Driver 132 

DS8863 MOS-to-LED 8-Digit Driver 132 

DS8867 8-Segment Constant Current Driver 133 

DS8871, DS8872, DS8873, DS8920, DS8977 Saturating LED Cathode Drivers 134 

DS8877 6-Digit LED Driver 135 

DS8963 MOS-to-LED 8-Digit Driver 132 

DS8973, DS8974, DS8975, DS8976, DS89789-Digit LED Drivers 136 

LM3909 LED Flasher/Oscillator 137 

LM3914 Dot/Bar Display Driver. 138 

LM3915 Dot/Bar Display Driver 139 

MM5421, MM5422 Digital Alarm Clocks 140 

MM5450, MM5451, LED Display Drivers 141 

MM5455 Digital Alarm Clock 142 

MM5456, MM5457, Digital Alarm Clocks 143 

MM54C48/MM74C48 BCD-to-7-Segment Decoder 144 

MM54C901/MM74C901 Hex Inverting TTL Buffer 145 

MM54C902/MM74C902 Hex Non-Inverting TTL Buffer 145 

MM54C903/MM74C903 Hex Inverting CMOS Buffer 145 

MM54C904/MM74C904 Hex Non-Inverting TTL Buffer 145 



III 



Alpha-Numerical Index 



MV5050 Water-Clear Lens 35-9 

MV5051 Milk-White Diffused Lens 

MV5052 Red Transparent Lens 

MV5053 Light Red Diffused Lens 

MV5055 Red Diffused Lens, Wide Viewing Angle 

MV5056 Dark Red Diffused Lens 

MV5152 Orange Emitter, Transparent Orange Lens 35-11 

MV5153 Orange Emitter — Diffused Orange Lens 35-13 

MV5154 Orange Emitter — Lightly Diffused Orange Lens 

MV5252 Green Emitter, Transparent Green Lens 35-1 1 

MV5253 Green Emitter — Diffused Green Lens 35-13 

MV5254 Green Emitter — Lightly Diffused Green Lens 

MV5352 Yellow Emitter, Transparent Yellow Lens 35-1 1 

MV5353 Yellow Emitter — Diffused Yellow Lens 35-13 

MV5354 Yellow Emitter — Lightly Diffused Yellow Lens 

MV5752 Orange-Red Emitter, Transparent Red Lens 35-11 

MV5753 Orange-Red Emitter — Diffused Red Lens 35-13 

MV5754 Orange-Red Emitter — Lightly Diffused Red Lens 

MV52124 0.220" Green Rectangular Legend Lamp 35-15 

MV53124 0.220" Yellow Rectangular Legend Lamp 

MV57124 0.220" High Efficiency Red Rectangular Legend Lamp 

NSA0028 0.100 Inch (254 mm) LED Numeric Array 44 

NSA0038 0.100 Inch (254 mm) LED Numeric Array 44 

NSA500 Series 0.100 lnch(254mm) LED Numeric Arrays 46 

NSA598 0.100 Inch (254 mm) LED Numeric Array '. . . 46 

NSA1100 Series 0.100 Inch (254 mm)9-Digit LED Numeric Arrays 50 

NSA1188 0.100 Inch (254 mm) LED Numeric Array 50 

NSA1198 0.100 Inch (254 mm) LED Numeric Array 50 

NSA1298A 0.110 Inch (2.794 mm)9-Digit LED Numeric Array 54 

NSA1541A 0.140 Inch (3556 mm) 4-Digit LED Numeric Array 56 

NSA1588A 0.140 Inch (3556 mm) 8-Digit LED Numeric Array 58 

NSA5140A 0.110 Inch (2.79 mm) 14-Digit LED Numeric Array. 60 

NSA7120 0.110 Inch (2.794 mm) 12-Oigit LED Numeric Array 62 

NSB3382 03" Multidigit LED Numeric Display 87 

NSB3881 0.3" Multidigit LED Numeric Display 87 

NSB3882 0.3" Multidigit LED Numeric Display 87 

NSB5382 05" Multidigit LED Numeric Display 93 

NSB5388 31/2-Digit05 Inch (12.70 mm) LED Display 68 

NSB5415 41/2-Digit05 Inch (12.70 mm) LED Display .* 72 

NSB5881 05" Multidigit LED Numeric Display 93 

NSB5882 05" Multidigit LED Numeric Display 93 

NSB5917 05 Inch (12.70 mm) 5 Digit Numeric Display 75 

NSB5918 3 3/4-Digit 05 Inch (12.70 mm) LED Display 77 

NSB5921 05 Inch (12.70 mm) 5-Digit Numeric Display 75 

NSB592205 Inch (12.70 mm) 5-Digit Numeric Display 75 

NSB5931 05 Inch (12.70 mm) 6-Digit Common Cathode GaAsP Display 81 

NSB7400 0.7 Inch 4-Digit LED Duplex Clock Display. 83 

NSB7401 0.7 Inch 4-Digit LED Duplex Clock Display 83 



IV 



Alpha-Numerical Index (continued) 



NSB7402 0.7 Inch 4-Digit LED Duplex Clock Display 83 

NSB7403 0.7 Inch 4-Digit LED Duplex Clock Display 83 

NSB7404 0.7 Inch 4-Digit LED Duplex Clock Display 83 

NSB7405 0.7 Inch 4-Digit LED Duplex Clock Display 83 

NSC001 Mounting Clip for NSL5040 Series Lamps 7 

NSC002 Clip and Ring for NSL5020 Series Umps 7 

NSC003 Clip and Ring for T1 3/4 Size Lamps 7 

NSL4944 Current Regulated, Universal LED Lamp — - 12 

NSL5020 Series Red LED Lamps 1 4 

NSL5022 Red LED Lamp 14 

NSL5023 Red LED Lamp I 4 

NSL5024 Red LED Lamp I 4 

NSL5026 Red LED Lamp I 4 

NSL5027 Red LED Lamp I 4 

NSL5040 Series Red LED Umps 16 

NSL5041 Red LED Lamp • • 16 

NSL5042 Red LED Lamp 16 

NSL5043 Red LED Lamp 16 

NSL5046 Red LED Lamp 16 

NSL5050 Series Red LED Umps 18 

NSL5052 Red LED Ump 18 

NSL5053 Red LED Ump 18 

NSL5056 Red LED Ump 18 

NSL5057 Red LED Ump. 18 

NSL5058 Red Diffused Lens LED Ump •. •■ 20 

NSL5070 Series T-1 Size Red LED Umps 22 

NSL5072AT-1 Size Red LED Ump 22 

NSL5076A T-1 Size Red LED Ump 22 

NSL5077AT-1 Size Red LED Ump 22 

NSL5080 Series T-1 Size Red LED Umps 24 

NSL5081 T-1 Size Red LED Ump 24 

NSL5082 T-1 Size Red LED Ump 24 

NSL5086 T-1 Size Red LED Ump 24 

NSL5250 Series Green LED Umps 26 

NSL5252A Green LED Ump 26 

NSL5253A Green LED Ump 26 

NSL5274 T-1 Size Green LED Ump 28 

NSL5350 Series Yellow LED Umps 29 

NSL5352A Yellow LED Ump 29 

NSL5353A Yellow LED Ump 29 

NSL5374 T-1 Size Yellow LED Ump 31 

NSL5750 Series High Efficiency Red LED Umps 32 

NSL5752 High Efficiency Red LED Ump 32 

NSL5753 High Efficiency Red LED Ump 32 

NSL5774T-1 Size High Efficiency Red LED Ump 34 



Alpha-Numerical Index of Interface Devices 



(Continued) 



NSL6050 Water-Clear Lens 35.3 

NSL6051 Milk-White Diffused Lens 

NSL6052 Red Transparent Lens 

NSL6053 Light Red Diffused Lens 

NSL6055 Red Diffused Lens, Wide Viewing Angle 

NSL6056 Dark Red Diffused Lens 

NSL6152 Orange Emitter, Transparent Orange Lens 35.5 

NSL6153 Orange Emitter — Diffused Orange Lens 35.7 

NSL6154 Orange Emitter — Lightly Diffused Orange Lens 

NSL6252 Green Emitter, Transparent Green Lens 35.5 

NSL6253 Green Emitter — Diffused Green Lens 35.7 

NSL6254 Green Emitter — Lightly Diffused Green Lens 

NSL6352 Yellow Emitter, Transparent Yellow Lens 35.5 

NSL6353 Yellow Emitter — Diffused Yellow Lens 35.7 

NSL6354 Yellow Emitter— Lightly Diffused Yellow Lens 

NSL6752 Orange-Red Emitter, Transparent Red Lens 35.5 

NSL6753 Orange-Red Emitter — Diffused Red Lens 35.7 

NSL6754 Orange-Red Emitter — Lightly Diffused Red Lens 

NSL52124 0.220" Green Rectangular Legend Lamp 35-1 

NSL531 24 0.220" Yellow Rectangular Legend Lamp 

NSL571 24 0.220" High Efficiency Red Rectangular Legend Lamp 

NSM3914 112 

NSM3915 112 

NSM3916 112 

NSM4000A LED Display with Driver. 116 

NSN334 0.3" Multidigit LED Numeric Display. 87 

NSN373 03" Multidigit LED Numeric Display 87 

NSN374 03" Multidigit LED Numeric Display 87 

NSN381 0.3" Multidigit LED Numeric Display 87 

NSN382 0.3" Multidigit LED Numeric Display 87 

NSN534 05" Multidigit LED Numeric Display 93 

NSN581 05" Multidigit LED Numeric Display. 93 

NSN582 05" Multidigit LED Numeric Display 93 

NSN583 05" Multidigit LED Numeric Display 93 

NSN584 05" Multidigit LED Numeric Display 93 

NSN734 0.7" Multidigit LED Numeric Display 99 

NSN781 0.7" Multidigit LED Numeric Display. 99 

NSN782 0.7" Multidigit LED Numeric Display 99 

NSN783 0.7" Multidigit LED Numeric Display 99 

NSN784 0.7" Multidigit LED Numeric Display 99 



VI 



Alpha-Numerical Index of Interface Devices 

ADD3501 3 1/2-Digit DVM with Multiplexed 7-Segment Output 122 

ADD3701 3 3/4-Digit DVM with Multiplexed 7-Segment Output 123 

CD4511BC BCD-to-7-Segment Latch/Decoder/Driver 124 

CD4511BM BCD-to-7-Segment Latch/Decoder/Driver 124 

DM5446A BCD/7-Segment Decoder/Driver 125 

DM5447A BCD/7-Segment Decoder/Driver 125 

DM54LS47 BCD/7-Segment Decoder/Driver 125 

DM54LS48 BCD/7-Segment Decoder/Driver. 125 

DM54LS49 BCD/7-Segment Decoder/Driver 125 

DM7446A BCD/7-Segment Decoder/Driver — 125 

DM7447A BCD/7-Segment Decoder/Driver. 125 

DM74LS47 BCD/7-Segment Decoder/Driver 125 

DM74LS48 BCD/7-Segment Decoder/Driver 125 

DM74LS49 BCD/7-Segment Decoder/Driver 125 

DS55493 Quad LED Segment Driver 127 

DS75491 MOS-to-LED Quad Segment Driver 126 

DS75492 MOS-to-LED Hex Digit Driver 126 

DS75493 Quad LED Segment Driver 127 

DS7856 BCD-to-7-Segment LED Driver 130 

DS7858 BCD-to-7-Segment LED Driver 130 

DS8669 2-Digit BCD-to-7-Segment Decoder/Driver 131 

DS8692 Printing Calculator Interface Set. 129 

DS8693 Printing Calculator Interface Set 129 

DS8694 Printing Calculator Interface Set 129 

DS8856 BCD-to-7-Segment LED Driver 130 

DS8857 BCD-to-7-Segment LED Driver. : 130 

DS8858 BCD-to-7-Segment LED Driver 130 

DS8859 Open Collector Hex Latch LED Driver. 131 

DS8861 MOS-to-LED 5-Segment Driver 132 

DS8863 MOS-to-LED 8-Digit Driver. 132 

DS8867 8-Segment Constant Current Driver. 133 

DS8871 Saturating LED Cathode Driver 134 

DS8872 Saturating LED Cathode Driver. 134 

DS8873 Saturating LED Cathode Driver 134 

DS8920 Saturating LED Cathode Driver 134 

DS8877 6-Digit LED Driver. 134 

DS8963 MOS-to-LED 8-Digit Driver. 132 

DS8973 9-Digit LED Driver 136 

DS8974 9-Digit LED Driver 136 

DS8975 9-Digit LED Driver. 136 

DS8976 9-Digit LED Driver. 136 

DS8978 9-Digit LED Driver. 136 



VII 



Alpha-Numerical Index of Interface Devices 



(Continued) 



LM3909 LED Flasher/Oscillator. 137 

LM3914 Dot/Bar Display Driver 138 

LM3915 Dot/Bar Display Driver 139 

MM5421 Digital Alarm Clock 140 

MM5422 Digital Alarm Clock 140 

MM 5450 LED Display Driver 141 

MM5451 LED Display Driver 141 

MM5455 Digital Alarm Clock. 142 

MM5456 Digital Alarm Clock 143 

MM5457 Digital Alarm Clock 143 

MM54C48 BCD-to-7-Segment Decoder 144 

MM54C901 Hex Inverting TTL Buffer 145 

MM54C902 Hex Non-Inverting TTL Buffer 145 

MM54C903 Hex Inverting CMOS Buffer. 145 

MM54C904 Hex Non-Inverting CMOS Buffer. 145 

MM74C48 BCD-to-7-Segment Decoder 145 

MM74C901 Hex Inverting TTL Buffer 145 

MM74C902 Hex Non-Inverting TTL Buffer 145 

MM74C903 Hex Inverting CMOS Buffer. 145 

MM74C904 Hex Non-Inverting CMOS Buffer. 145 



VIII 



a 



Introduction 



Optoelectronics at National Semiconductor means 
visible light emitting diodes: discrete LED lamps, 
multidigit LED numeric arrays and displays, and 
various custom LED arrays and components 

National's broad line of LED devices offers the 
customer high quality, economical solutions to most 
design needs. 



a 



Discrete LED Lamps 



National produces a broad line of discrete visible 
light emitting diodes which offer the customer a wide 
selection of packages, colors, lens effects, brightness 
and other characteristics for a multitude of applica- 
tions. All LED lamps manufactured by National have 
the prefix NSL 



QUICK SELECTION MATRIX 



Lens 


TISize 


T1Vi Size 


Flangeless 
T1% Size 


T1V«Size 


Rectangular 


Water clear 


NSL5080 


NSL5020 


NSL5040 


NSL5050 




White diffused 


NSL5081 




NSL5041 






Red transparent 


NSL5072A* 
NSL5082 


NSL5022 


NSL5042 


NSL5052 
NSL5752 




Red semi-diffused 






NSL5043 






Light red diffused 




NSL5024 
NSL5027 




NSL5057 




Red diffused 


NSL5076A 
NSL5077A* 
NSL5086 
NSL5774 


NSL5023 
NSL5026 


NSL5046 


NSL4944 
NSL5053 
NSL5056 
NSL5058 
NSL5753 


NSL57124 


Green transparent 








NSL5252A 




Green diffused 


NSL5274 






NSL5253A 




Yellow transparent 








NSL5352A 




Yellow diffused 


NSL5374 






NSL5353A 





* side viewing 



0) 

T3 

s 
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Lamp Selection Guide 



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LED Lamp Package Outlines 



inches (millimeters) 



m 
o 



7~\ 



,<UK 
MM 



.•OJOlvl. 



|1M »M15 /"^ 



CATHODE 
/~ n " 0040 
•^ ' (1.0141 



MAX MENISCUS 



I.IMI.I10 I I ]| 

(0.702 -0.254) 'jTl "II MWMII 

^ill IT"™ -™ 



J— j- fl-n 

1!2LJ f I o. 

n .Tin r~T<2. 




0.230 '0J00 ...fll 



Package A 



17.020 0.2541 hoiO** 1 * 1 
l \'"' 0.254 




-CATHOOEFIAT 



Package B 



fi» 

3 

■o 

■D 
Q> 
O 

fl) 
(Q 
(D 



3 
<D 
0) 



DIM "A" 


LAMP TYPE 


0.1 10 ±0.015 (2.79 ±0.38) 
0.1 10 ±0.015 (2.79 ±0.38) 
0.1 10 ±0.015 (2.79 ±0.38) 
0.140 ±0.015 (3.56 ±0.38) 
0.195 ±0.015 (4.95 ±0.38) 


NSL5050, uncolored point source 

NSL5052, red point source 

NSL5053, red diffused 

NSL5056, red diffused 

NSL5057, light red high intensity diffused 



UN 50J10 — 



^ 



MBiUll* 

124.003 ±0.7021 



(24.705 tO.7021 

J 



xr& 



=i 0,A 

1.040 

(1.010) 

MAX 

MENISCUS 

L 



» HOP 

«t5S (2.540)" 
NSL5043 

"NSIS041 
NSLS040 

0J2S ±0.004 



— CATHOBET 



(1.770 ±0.2541 



(S> 



(2.032 • 0.1 521 A 
.40.015 
OJIO 



0.040 



HO 



h 



0.300 ±0.010 
(7.(20 *0J!S4) 



B .057-3.1751 
0JS2-0J02 _ ~" 



| (1.010 ±0.2541 

IW * CATHODE 

(10.542) 



~ 0.03010.010 

"(0.702 ±0.254) 



» I 

0.010 

(1.770) _| |_i 



0J40 
(1.010) 



MAX MENISCUS 




ISMS-CON) J 



T> --'jJTJM 



^Ffl 

0.040 I 

(1J10I 

MAX U I 



0.000 MENISCUS 
(10.704) 



(2.021-3420) 

PLASTIC 



8.070-0.111 
(1.770-2.704) "J 



0.730 

(10.5421 






CATHOOE IEA0 



Package C 



Package D 



Package E 



DIM "A" 


LAMP TYPE 


0.1 10 ±0.015 (2.79 ±0.38) 
0.1 10 ±0.015 (2.79 ±0.38) 
0.1 10 ±0.015 (2.79 ±0.38) 
0.140 ±0.015 (3.56 ±0.38) 
0.140 ±0.015 (3.56 ±0.38) 
0.195 ±0.015 (4.95 ±0.38) 


NSL5020, uncolored, transparent lens 

NSL5022, red, transparent-lens 

NSL5023, red, diffused-lens 

NSL5024, light-red, diffused-lens narrow angle 

NSL5026, red, diffused-lens narrow angle 

NSL5027, red, diffused-lens narrow angle 



Note: ± 0.015/(0.381) tolerance on all dimensions unless otherwise specified. 



LED Lamp Package Outlines 



(Continued) inches (millimeters) 



SPHERICAL RADIUS 



"s 



7^ 



«.en 
-cots 



M 



0.050 

mm 

: L 



0.040 
(1.016) 



0.070 
(1.770) 



\.MAX EPOXV I 
MENISCUS 0.730 



H hi— ,.„,««« 

:■*•-_ L_ flow 

iso) ~ r , lins; 




CATHODE FLAT 



SPHERICAL 
RAOIUS^ , 



0.120 
(3J4SI 
0.146 

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0.180 
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ACTIVE 



JToaii 1 



»•«"«•"» 4 (L, {_,„ 



0.000 (1.7701 
BiOM 




0.710 

I10J41) 



Package F 



Package Q 




ACTIVE AREA - 




II U o.«o;j 

II 7711 — I— —J V -0- 



-SPHERICAL RADIUS 




ACTIVE AREA VISISLE 
FROM THIS SIOE 
ANODE 



Package H 



Package I 




|-£--| 



0.1M 

u.1001 



\ 



"«.7I6|" 



(MM) 



Package J 



Note: ± 0.015/(0.381) tolerance on all dimensions unless otherwise specified. 



Mounting Techniques 

P.C. Board Mounting 




wM^ TMwmm. 




Panel MOUnting inches (millimeters) 



0350-0.253 
(S.350-6.426) 



OIA MOUNTING HOLE 



X 




r\ 



0.030 0.250 

(0.702) (6.350) 

PANEL 

THICKNESS 



8 



£ 



-! 



0.040 
(1.016) 



\ 



1 r 

_i (0J50) 



(0J50) 
1 



BLACK 

PANEL MOUNTING 
ADAPTOR CLIP 
ORDER NUMBER NSC001 



NSC001 Clip 



0.310 



0.125 



(3.175,- MAX I 



BLACK PANEL 

MOUNTING ADAPTOR 

CLIP. 2 PIECES 

ORDER NUMBER NSC002 




0350 OIA 
« 3S0) MOUNTING 
9 - 3Stt) HOLE 



(0.144) 



NSC002 Clip + Ring 



0.026 
(0.635) 



0.125 
(3.175) 



BLACK PANEL 

MOUNTING ADAPTOR 

CLIP, 2 PIECES 

ORDER NUMBER NSC003 




0.250 DIA 
(OJSOjjyW 



NSC003 Clip + Ring 



See individual data sheets for correct clip/lamp combination 



LED Lamp Cross Reference 


Part Number 


Description 


NSC Device 


Notes 


Hewlett-Packard 








HLMP-1300 


Red Diffused T1 


NSL5774 


B, C 


HLMP-1301 


Red Diffused T1 


NSL5774 


B, C 


HLMP-1302 


Red Diffused T1 


NSL5774 


B, C 


HLMP-1400 


Yellow Diffused T1 


NSL5374 


C 


HLMP-1401 


Yellow Diffused T1 


NSL5374 


C 


HLMP-1402 


Yellow Diffused T1 


NSL5374 


C 


HLMP-1500 


Green Diffused T1 


NSL5274 


B, C 


HLMP-1501 


Green Diffused T1 


NSL5274 


B, C 


HLMP-1502 


Green Diffused T1 


NSL5274 


B, C 


5082-4403 


Red Diffused T1 3 A 


NSL5056 


C 


5082-4440 


Red Diffused T1 V* 


NSL5056 


C 


5082-4480 


Red Diffused T1 


NSL5086 


A 


5082-4483 


White Diffused Red T1 


NSL5081 


A 


5082-4484 


Red Diffused T1 


NSL5086 


A 


5082-4486 


Water Clear Red T1 


NSL5080 


A 


5082-4487 


Low Profile Water Clear Red T1 


NSL5080 


C 


5082-4488 


Low Profile Water Clear Red T1 


NSL5080 


C 


5082-4494 


Red Diffused T1 


NSL5086 


A 


5082-4550 


Yellow Diffused T1V4 


NSL5353A 


A 


5082-4555 


Yellow Diffused T1 V* 


NSL5353A 


A 


5082-4557 


Yellow Transparent T1 V* 


NSL5352A 


A 


5082-4558 


Yellow Transparent T1 S A 


NSL5352A 


A 


5082-4584 


Yellow Diffused T1 


NSL5374 


C 


5082-4650 


Red Diffused T1 % 


NSL5753 


B 


5082-4655 


Red Diffused T1 V* 


NSL5753 


B 


5082-4657 


Red Transparent T1 V* 


NSL5752 


B 


5082-4658 


Red Transparent T1 3 /4 


NSL5752 


B 


5082-4684 


Red Diffused T1 


NSL5774 


B, C 


5082-4790 


Low Profile Red Diffused T1 'A 


NSL5046 


C 


5082-4791 


Low Profile Red Diffused T1 V* 


NSL5043 


B, C 


5082-4850 


Red Diffused T1 V* 


NSL5053 


A 


5082-4855 


Red Diffused T1 % 


NSL5056 


A 


5082-4860 


Red Current Regulating T1 % 


NSL4944 


B, C 


5082-4880 


Red Diffused T1 3 A 


NSL5056 


C 


5082-4881 


Red Diffused T1 V« 


NSL5057 


C 


5082-4882 


Red Diffused T1 V* 


NSL5057 


B, C 


5082-4883 


Water Clear Red T1 V* 


NSL5050 


C 


5082-4884 


Water Clear Red T1 V* 


NSL5050 


B,C 


5082-4885 


Water Clear Red T1 V* 


NSL5050 


B, C 


Notts: A— Direct replacement 

B— Minor electrical or optical difference 
C— Minor mechanical difference 
O— Major electrical or optical difference 
E— Major mechanical difference 



LED Lamp Cross Reference (continued) 


Part Number 


Description 


NSC Device 


Notes 


Hewlett-Packard (Continued) 






5082-4886 


White Diffused Red T1 V* 


NSL5041 


E 


5082-4887 


White Diffused Red T1 V* 


NSL5041 


B,E 


5082-4888 


White Diffused Red T1 V* 


NSL5041 


B, E 


5082-4950 


Green Diffused T1 V* 


NSL5253A 


A 


5082-4955 


Green Diffused T1 3 /« 


NSL5253A 


A 


5082-4957 


Green Transparent T1 % 


NSL5252A 


A 


5082-4958 


Green Transparent T1 3 A 


NSL5252A 


A 


5082-4984 


Green Diffused T1 


NSL5274 


B, C 


Monsanto 








MV5020 


Water Clear Red T1V 2 


NSL5020 


A 


MV5022 


Red Transparent T1 Vi 


NSL5022 


A 


MV5023 


Red Diffused T1 V* 


NSL5023 


A 


MV5024 


Red Diffused T1V 2 


NSL5024 


A 


MV5025 


Red Diffused T1V 2 


NSL5023 


B 


MV5026 


Red Diffused T1% 


NSL5026 


A 


MV5050 


Water Clear Red T1 V* 


NSL5050 


A 


MV5052 


Red Transparent T1 % 


NSL5052 


A 


MV5053 


Red Diffused T1 V* 


NSL5053 


A 


MV5054-1 


Red Diffused T1 V* 


NSL5057 


A 


MV5054-2 


Red Diffused T1 % 


NSL5057 


B 


MV5054-3 


Red Diffused T1 >A 


NSL5057 


D 


MV5055 


Red Diffused T1 V* 


NSL5053 


B, C 


MV5056 


Red Diffused T1 V* 


NSL5056 


B, C 


MV5074B 


Red Diffused T1 


NSL5086 
or NSL5076A 


C 


MV5075B 


Red Diffused T1 


NSL5086 
or NSL5076A 


B, C 


MV5077B 


Low Profile Red Diffused T1 


NSL5086 


B, C 


MV5252 


Green Transparent T1 V* 


NSL5252A 


A 


MV5253 


Green Diffused T1 */* 


NSL5253A 


A 


MV5254 


Green Diffused T1 V* 


NSL5253A 


B 


MV5274B 


Green Diffused T1 


NSL5274 


C 


MV5352 


Yellow Transparent T1 *A 


NSL5352A 


A 


MV5353 


Yellow Diffused T1 V« 


NSL5353A 


A 


MV5354 


Yellow Diffused T1 V* 


NSL5353A 


B 


MV5374B 


Yellow Diffused T1 


NSL5374 


C 


MV57124 


Red Rectangular 


NSL57124 


A 


MV5752 


Red Transparent T1 % 


NSL5752 


A 


Not**: A— Direct replacement 

B— Minor electrical or optical difference 
C— Minor mechanical difference 
D— Major electrical or optical difference 
E— Major mechanical difference 



LED Lamp Cross Reference (continued) 






Part Number 


Description 


NSC Device 


Notes 


Monsanto (Continued) 






MV5753 


Red Diffused T1 *A 


NSL5753 


A 


MV5754 


Red Diffused T1 % 


NSL5753 


B 


MV5774B 


Red Diffused T1 


NSL5774 


C 


Texas Instruments 






TIL209A 


Red Diffused TV 


NSL5086 
or NSL5076A 


C 


TIL211 


Green Diffused T1 


NSL5274 


C 


TIL213 


Yellow Diffused T1 


NSL5374 


C 


TIL220 


Red Diffused T1 V* 


NSL5056 


A 


TIL221 


Water Clear Red T1% 


N8L5Q50 


A 


TIL222 


Green Diffused T1 % 


NSLS253A 


A 


Falrchlld 








FLV1Q4A 


Narrow Beam Red T1 1 A 


NSL5027 


C, D 


FLV110 


Medium Profile Red Diffused T1 *A 


NSL5046 


' E 


FLV111 


Medium Profile Water Clear Red T1 % 


NSL5040 


E 


FLV112 


Medium Profile White Diffused Red T1 % 


NSL5041 


E 


FLV117 


Medium Profile Red Diffused T1 *A 


NSL5046 


E 


FLV118 


Medium Profile Water Clear Red T1 *A 


NSL5040 


E 


FLV140 


Low Profile Red Diffused T1 *A 


NSL5046 


C 


FLV141 


Low Profile Red Transparent T1 *A 


NSL5042 


C 


FLV150 


Red Diffused T1 *A 


NSL5056 


c 


FLV151 


Red Transparent T1 *A 


NSL5052 


c 


FLV160 


Red Diffused T1 *A 


NSL5057 


A 


FLV161 


Red Transparent T1 *A 


NSL5052 


A 


FLV310 


Medium Profile Green Diffused T1 *A 


NSL52S3A 


E 


FLV311 


Medium Profile Green Transparent T1 % 


NSL52S2A 


E 


FLV340 


Low Profile Green Diffused T1 V* 


NSL5253A 


E 


FLV341 


Low Profile Green Transparent T1 % 


NSL5252A 


E 


FLV350 


Green Diffused T1 *A 


NSL5253A 


C 


FLV351 


Green Transparent T1 % 


NSL5252A 


C 


FLV360 


Green Diffused T1 *A 


NSL5253A 


A 


FLV361 


Green Transparent T1 *A 


NSL5252A 


A 


FLV410 


Medium Profile Yellow Diffused T1 % 


NSL5353A 


E 


FLV411 


Medium Profile Yellow Transparent T1 % 


NSL5352A 


E 


FLV440 


Low Profile Yellow Diffused T1*/ 4 


NSL5353A 


E 


FLV441 


Low Profile Yellow Transparent T1 'A 


NSL5352A 


E 


FLV450 


Yellow Diffused T1 *A 


NSL5353A 


C 


Notee: A— Direct replacement 

B— Minor electrical or optical difference 
C— Minor mechanical difference 
D— Major electrical or optical difference 
E— Major mechanical difference 



10 



LED Lamp Cross Reference (continued) 


Part Number 


Description 


NSC Device 


Notes 


Fairchlld (Continued) 






FLV451 


Yellow Transparent T1 % 


NSL5352A 


C 


FLV460 


Yellow Diffused T1V 4 


NSL5353A 


A 


FLV461 


Yellow Transparent T1 % 


NSL5352A 


A 


FLV510 


Medium Profile Red Diffused T1 % 


NSL5753 


E 


FLV540 


Low Profile Red Diffused T1 'A 


NSL5753 


E 


FLV550 


Red Diffused T1 'A 


NSL5753 


C 


FLV560 


Red Diffused T1 *A 


NSL5753 


A 


Litronix 








GL4484 


Green Diffused T1 


NSL5274 


C 


GL4850 


Green Diffused T1 'A 


NSL5253A 


A 


RLC200 


Red Current Regulating T1 *A 


-NSL4944 


A 


RLC201 


Red Current Regulating T1 *A 


NSL4944 


B 


RL-20 


Red Diffused T1 V* 


NSL5056 


A 


RL-20-02 


Red Transparent T1 V* 


NSL5052 


A 


RL-20-04 


Water Clear Red T1 V* 


NSL5050 


A 


RL-2000 


Red Diffused T1 *A 


NSL5057 


B 


RL-209 


Red Diffused T1 


NSL5086 


C 


RL-209A 


Red Diffused T1 


NSL5086 


C 


RL-209-1 


Red Diffused T1 


NSL5086 


B, C 


RL-209-2 


Red Diffused T1 


NSL5086 


C,D 


RL-209-02 


Red Transparent T1 


NSL5082 


C 


RL-209-03 


White Diffused Red T1 


NSL5081 


C 


RL-209-04 


Water Clear Red T1 


NSL5080 


C 


RL-21 


Red Diffused T1 'A 


NSL5056 


A 


RL-21 -02 


Red Transparent T1 *A 


NSL5052 


A 


RL-21 -04 


Water Clear Red T1 V* 


NSL5050 


A 


RL4403 


Red Diffused T1 *A 


NSL5056 


A 


RL4480 


Red Diffused T1 


NSL5086 


C 


RL4480-1 


Red Diffused T1 


NSL5086 


B, C 


RL4480-2 


Red Diffused T1 


NSL5086 


C, D 


RL4480-5 


Red Diffused T1 


NSL5086 


C 


RL4484 


Red Diffused T1 


NSL5086 


C 


RL4850 


Red Diffused T1 *A 


NSL5053 


A 


RL5054-1 


Red Diffused T1 'A 


NSL5057 


A 


RL5054-2 


Red Diffused T1 V* 


NSL5057 


B 


RL5054-5 


Red Diffused T1 *A 


NSL5057 


A 


YL4484 


Yellow Diffused T1 


NSL5374 


C 


YL4850 


Yellow Diffused T1 *A 


NSL5353A 


A 


Notes: A— Direct replacement 

B— Minor electrical or optical difference 
C— Minor mechanical difference 
D— Major electrical or optical difference 
E— Major mechanical difference 



11 




National 
Semiconductor 



NSL4944 Current Regulated, 
Universal LED Lamp 

General Description 

The NSL4944 lamp is a GaAsP red diffused solid-state 
high intensity LED encapsulated in a plastic package 
containing a current regulating IC that provides constant 
intensity over a wide voltage range. For applications 
information, see AN-153. 

Applications 

■ Indicator lamps for back-lit panels 

■ Optical coupling 

• ■ Front-viewed pilot lights 

■ Back-lit switches 

■ Annunciators 

■ AC indicator lamps 

■ Battery charging circuits 

Features 

■ 2V startup 

■ No series resistor required 




■ 18V forward voltage 

■ 1 8V reverse voltage 

■ Very low turn-on voltage 

■ AC or DC operation 

■ Very wide useful voltage range 

■ Long life 

■ Wide angle view 

■ T1 3/4 size 

Maximum Ratings 

Forward Voltage @ 25°C 

Derate voltage linearly from 25°C 
Reverse Voltage 
Power Dissipation @ 25°C 
Operating and Storage Temperature 
Lead Temperature 

(Soldering, 5 seconds) 



18V 

0.125V/°C 

18.0 V 

300 mW 

-55to+100°C 

260°C 



Electrical and Optical Characteristics (25 °c) 



PARAMETER 



CONDITIONS 



MIN 



TYP 



MAX 



UNITS 



Forward Current (l F ) 

Light Intensity (I) 

Reverse Breakdown Voltage (BV R ) 

Peak Wavelength (X pk ) 

Spectral Width 

Angle of Half Intensity 

Minimum Operational Voltage 



2.4V < V F < 18V 

V F = 5V 

l R = 100/xA 

V F = 10V 

V F = 10V 

V F = 10V 

l F = 10 mA 



10 


13 


0.2 


0.8 


18.0 






660 




40 




55 




1.9 



18 



2.4 



mA 

mcd 

V 

nm" 

nm 

degrees 

V 



Typical Performance Characteristics (25 °o 



Reverse Current Or) vt 
Reverse Voltage (Vr) 





I « 

k 200 

ce 

u 

S 300 



Forward Current (lp) vs 
Forward Voltage (Vp) 



20 IS 10 S 

REVERSE VOLTAGE (V) 



FORWARD VOLTAGE (V) 



Light Intensity vs 
Forward Voltage 



/ 










20 

1 IS 

z 

BC 

§ 10 

o 

e 
cc 

i s 












1.0 

I" 

t 0.6 

i 0.4 

a 

-■ 0.2 












/ 






























































































J 











S 10 IS 20 25 

FORWARD VOLTAGE (V) 



12 



AppliCdtiOfl CirCUitS Note: Free indicator with every circuit. 
For complete application information, see AN-153. 



12 Voc IUMRES.) 




Zenar IsoURCE 




I ' ^ TTL OUTPUTS 



J 


T 


i 


> «-'«V« 


LOAD 


( 


s 






1 


\ 


r 



Shorted SCR Indicator 





\ 



Switch or Circuit Breaker or 
Relay Closure Indicator 




Logic Probe 



Replacing Amplifier Pull-up Resistor 



Small Battery Trickle Charger 



Order Number NSL4944 or NSL4944 + NSC003 
See Package Outline A Page 5 



13 



EJ| National 

SlA Semiconductor 




NSL5020 Series Red LED Lamps 

NSL5020 Uncolored, Transparent-Lens Red LED Lamp 

NSL5022 Red, Transparent-Lens Red LEO Lamp 

NSL5023 Red, Diffused-Lens Red LED Lamp 

NSL5024 Light-Red, Diffused-Lens Narrow Angle Red LED Lamp 

NSL5026 Red, Diffused-Lens Narrow Angle Red LED Lamp 

NSL5027 Light-Red, Diffused-Lens Narrow Angle Red LED Lamp 



General Description 

The NSL5020 series lamps are GaAsP solid-state LEDs 
encapsulated in a plastic package. They are electrically 
identical but optically different owing to different lens 
designs. These devices may be panel mounted with 
plastic adaptor clip NSC002. They may be directly 
soldered into a printed circuit board or the leads may 
be wire-wrapped. 



Features 

■ High intensity 

■ Wide viewing angle 

■ Wire wrap or solder leads 

■ IC compatible 

■ T1 1/2 size 



Applications 



Pilot lights 

Indicator lights 

Non-visual, e.g., film annotation, optical coupling 



Absolute Maximum Ratings 



Forward Current, DC (l F ) 


70 mA 


Reverse Voltage 


5.0V 


Power Dissipation 




Derate 2.0 mW/°C above 25°C 


180 mW 


Operating and Storage 




Temperature Range 


-55°Cto+100°C 


Lead Temperature 




(Soldering, 5 seconds) 


260°C 



Electrical and Optical Characteristics (25*0 



PARAMETER 



CONDITIONS 



5020 


5022 


5023 


5024 


5026 


5027 


1.8 


1.8 


1.8 


1.8 


1.8 


1.8 


2.0 


2.0 


2.0 


2.0 


2.0 


2.0 


5.0 


5.0 


5.0 


5.0 


5.0 


5.0 


0.5 


0.5 


0.5 


0.5 


0.5 


4.0 


1.0 


1.0 


1.0 


1.5 


1.5 


8.0 


660 


660 


660 


660 


660 


660 


40 


40 


40 


40 


40 


40 


50 


50 


50 


50 


50 


50 


40 


40 


50 


22 


30 


15 


75 


75 


75 


75 


75 


75 



UNITS 



Forward Voltage (V F ) 
Typ 
Max 

Reverse Breakdown Voltage (B V R ) 
Min 

Light Intensity (I) 
Min 
Typ 

Peak Wavelength 
Typ 

Spectral Width, Half-Intensity 
Typ 

Light Rise and Fall Time, 10%-90% 
Typ 

Angle of Half-Intensity Off Axis 
Typ 

Capacitance 
Typ 



l F =20mA 

100 juA 
l F = 20 mA 

l F =20mA 

l F = 20 mA 

Step Change of l F , 
50 12 System 

V = 0, 1 MHz 



mcd 
mcd 



PF 



14 



Typical Performance Characteristics 



C/> 



2S0 

>■ 

> in 

< 

i SO 


Light Intensity vt 
Ambient Temperature 
































































-1 


M 


TEI 


) 

HPERA 


S 

TURE 





i 



Forward Currant (lp) vs 
Forward Voltage (V F ) 



Light Intensity vs 
Forward Current (If) 





so 

40 
M 
2t 

11 






















_ 






















1 






















m 






















ec 


















| 


u 


















i 


$ 

BE 






































/ 




Ik 


















/ 




















^ 








a 




1.4 8.8 U 14 

FORWARD V0LTA6E (V) 


2 

































3M 
> 250 


















































































































£200 


























































Z iso 

> 


























































2 ioo 


























































SO 

























































































* 



(D 
CO 



11 21 30 40 SO CO 70 
FORWARD CURRENT (nA) 



Order Number NSL5020, NSL5023, NSL5024, 

NSL5026 or NSL5027 

See Package Outline D Page 5 



15 



£KI National 

mm Semiconductor 



NSL5040 Series Red LED Lamps 

NSL5040 Uncolored, Transparent-Lens Red LED Lamp 
NSL5041 Uncolored, Diffused-Lens Red LED Lamp 
NSL5042 Red, Transparent-Lens Red LED Lamp 
NSL5043 Red, Semi-Diffused-Lens Red LED Lamp 
NSL5046 Red, Diffused-Lens Narrow Angle Red LED Lamp 




General Description 

The NSL5040 series lamps are T1 3/4 size GaAsP 
solid-state LEDs encapsulated in a plastic package. This 
series of lamps replaces the NSL100 series TO-106 
lamps. They are electrically identical but optically 
different owing to different lens designs. These devices 
may be panel mounted with plastic adaptor clip NSC001. 
They may be directly soldered into a printed circuit 
board or the leads may be wire wrapped. 

Applications 

■ Pilot lights 

■ Indicator lights 

■ Non-visual, e.g., film annotation, optical coupling 

Electrical and Optical Characteristics <25°o 



Maximum Ratings 



Forward Current, DC (l F ) 70 m A 

Reverse Voltage 5.0V 

Power Dissipation 180 mW 

Derate 2.0 mW/°C above 25°C 

Operating and Storage Temperature — 55°C to +100°C 

Range 

Lead Temperature (Soldering, 5 seconds) 260°C 



PARAMETER 


CONDITIONS 


5040 


5041 


5042 


5043 


5046 


UNITS 


Forward Voltage (V F ) 


l F =20mA 














Typ 




1.8 


1.8 


1.8 


1.8 


1.8 


V 


Max 




2.0 


2.0 


2.0 


2.0 


2.0 


V 


Reverse Breakdown Voltage (BV„) 


100 jiA 














Min 




5.0 


5.0 


5.0 


5.0 


5.0 


V 


Light Intensity (I) 


l F = 20mA 














Min 




0.5 


0.5 


0.5 


0.5 


0.5 


mcd 


Typ 




1.0 


1.0 


1.0 


1.5 


1.5 


mcd 


Peak Wavelength 


l F =20mA 














Typ 




660 


660 


660 


660 


660 


nm 


Spectral Width, Half-Intensity 


l F = 20mA 














Typ 




40 


40 


40 


40 


40 


nm 


Light Rise and Fall Time, 10%-90% 


Step Change of l F , 














Typ 


l F , 50 n System 


50 


50 


50 


50 


50 


ns 


Angle of Half-Intensity Off Axis 
















Typ 




60 


50 


60 


60 


50 


degrees 


Capacitance 
















Typ 


V = 0, 1 MHz 


75 


75 


75 


75 


75 


PF 



16 



Performance Characteristics Curves 



CO 



258 

g 200 

>- 


Light Intensity vs 
Ambient Temperature 


















50 










• 




1 n 


z 

> 100 

p 

< 

" so 














£ 30 

K 
3 














g 20 

< 
S 
cc 
















_ 


50 


TE 


1 

OPERA 


5 

TURE 




1°C) 


100 



Forward Current (lp) vs 
Forward Voltage (Vp) 



Light Intensity vs 
Forward Current Op) 


































300 


























































> 250 


























































£200 


























































z 
u ISO 

> 


























































< too 


























































SO 

























































































SP 



(D 



0.4 0.8 12 1.6 

FORWARD VOLTAGE (V) 



10 20 30 40 SO SO 70 
FORWARD CURRENT (mA) 



Order Number: 



LAMP 

NSL5040 
NSL5041 
NSLS042 
NSL5043 
NSL5046 



LAMP WITH 
MOUNTING CLIP 

NSLS040 + NSCOOI 
NSL5041 + NSCOOI 
NSL5042 + NSCOOI 
NSL5043 + NSCOOI 
NSL5046 + NSCOOI 



See Package Outline C Page 5 



17 



CO 
<D 

■c 



HH National 

4jI Semiconductor 



NSL5050 Series Red LED Lamps 

NSL5050 Uncolored, Transparent-Lens Red LED Lamp 

NSL5052 Red, Transparent- Lens Red LED Lamp 

NSL5053 Red, Dlfffused-Lens Wide Angle Red LED Lamp 

NSL5056 Red, Diffused-Lens Red LED Lamp 

NSL5057 Light-Red, Diffused-Lens Narrow Angle Red LED Lamp 




General Description 

The NSL5050 series lamps are GaAsP solid-state LEDs 
encapsulated in a plastic package. They are electrically 
identical but optically different owing to different lens 
designs. These devices may be panel mounted with 
plastic adaptor clip NSC003. They may be directly 
soldered into a printed circuit board or the leads, availa- 
ble in two lengths, may be wire-wrapped. See physical 
dimensions drawing. 



Absolute Maximum Ratings 

Forward Current, DC (I F ) 
Reverse Voltage 
Power Dissipation 

Derate 2.0 mW/°C above 25°C 
Operating and Storage 

Temperature Range 
Lead Temperature 

(Soldering, 5 seconds) 



70 mA 
5.0V 



180 mW 

-55°Cto+100°C 

260°C 



Applications 



Features 



■ Indicator lamps for back-lit panels 

■ Optical coupling 

■ Front-viewed pilot lights 

■ Back lit switches 

■ Enunciators 



High intensity 
Wide viewing angle 
Wire-wrap or solder leads 
IC compatible 
T1 3/4 size 



Electrical and Optical Characteristics (25 >o 



PARAMETER 


CONDITIONS 


5050 


5052 


5053 


5056 


5057 


UNITS 


Forward Voltage (V F ) 


l F =20mA 














Typ 




1.8 


1.8 


1.8 


1.8 


1.8 


V 


Max. 




2.0 


2.0 


2.0 


2.0 


2.0 


V 


Reverse Breakdown Voltage (BV R ) 


100 nA 














Min 




5.0 


5.0 


5.0 


5.0 


5.0 


V 


Light Intensity (1) 


V? = 20 mA 














Typ 




1.8 


1.3 


0.8 


1.3 


2.0 


mcd 


Min. 




0.5 


0.5 


0.5 


0.5 


0.5 


mcd 


Peak Wavelength 


\ r =20mA 














Typ 




660 


660 


660 


660 


660 


nm 


Spectral Width, Half-Intensity 


l F = 20mA 














Typ 




40 


40 


40 


40 


40 


nm 


Light Rise and Fall Time, 10%-90% 


Step Change of l F , 














Typ 


50 il System 


50 


50 


50 


50 


50 


ns 


Angle of Half-Intensity Off Axis 
















Typ 




50 


50 


65 


55 


10 


degrees 


Capacitance 
















Typ. 


V = 0, 1 MHz 


75 


75 


75 


75 


75 


PF 



18 



Typical Performance Characteristics 



. 


Light Intensity vs 
(Vmbiant Tamparature 




g m 

>■ 

1 is* 

> 1W 

< 

« so 

































































Forward Currant (lp) vt 
Forward Voltage (Vp) 



M 






















< 41 










































Z 

£ 30 

K 
U 

S 20 

£ io 






































1 


















J 






































/ 




















/ 




















J 


r 





-50 SO 

TEMPERATURE (°C) 



0.4 OJ 1.2 1.6 2.0 
FORWARD VOLTAGE (V) 



Light Intensity vs 
Forward Currant (lp) 

































300 


























































> 250 


























































£ 200 

i- 


























































u ISO 

> 


























































2 ioo 


























































cc 
SO 

























































































10 20 30 40 50 60 70 
FORWARD CURRENT (mA) 



C/> 

r- 

s 

8 
J? 

3. 
<D 



Order Number NSL5050, NSL5052, NSL5053, 

NSL5056 or NSL5057 

Lamp with Mounting Clip: 

NSL505X + NSC003 

See Package Outline A Page 5 



19 




National 
Semiconductor 




NSL5058 Red Diffused Lens LED Lamp 



General Description 



Absolute Maximum Ratings 



The NSL5058 lamps are GaAsP solid-state LEDs 
encapsulated in a plastic package featuring a one inch 
lead length. These devices may be panel mounted with 
plastic adaptor clip NSC003. They may be directly 
soldered into a printed circuit board or the leads may be 
wire-wrapped. See physical dimensions drawing. 



Features 



One inch lead length 
High intensity 
Wide viewing angle 
Wire-wrap or solder leads 
IC compatible 
T1 3/4 size 



Forward Current, DC (lp) 


70 mA 


Reverse Voltage 


5.0V 


Power Dissipation 




Derate 2.0 mW/°C above 25°C 


180 mW 


Operating and Storage 




Temperature Range 


-40°Cto+100°C 


Lead Temperature 




(Soldering, 5 seconds) 


260° C 


Applications 





Indicator lamps for back-lit panels 
Optical coupling 
Front-viewed pilot lights 
Back lit switches 
Annunciators 



Electrical and Optical Characteristics (25°o 



PARAMETER 



Forward Voltage (Vf) 

Reverse Breakdown Voltage (BVr) 

Light Intensity (I) 

Peak Wavelength 

Spectral Width, Half-Intensity 

Light Rise and Fall Time, 10%-90% 

Angle of Half-Intensity Off Axis 

Capacitance 



CONDITIONS 



IF = 20 mA 

100mA 

lp = 20 mA 

IF = 20 mA 

IF = 20 mA 

Step Change of lp, 50J2 System 

V = 0, 1 MHz 



MIN 



5.0 
0.5 



TYP 



1.8 

1.8 

660 

40 

50 

50 

75 



MAX 



2.0 



UNITS 



V 

V 

mcd 

nm 

nm 

ns 

degrees 

pF 



20 



Typical Performance Characteristics 



Light Intensity vs Ambient 
Temperature 



9 200 

s 

> 100 































































Forward Current dp) vs 
Forward Voltage (Vp) 

























< 40 










































ae 

£ 30 

AC 






































1 


i 20 

s 

cc 

S 10 


















/ 






































/ 




















/ 




















-* 


f 





TEMPERATURE (°C) 



0.4 0.1 \2 1.6 
FORWARD VOLTAGE (V) 



Light Intensity vs Forward 
Current (lp) 

































300 


























































2S0 


























































200 


























































ISO 


























































100 


























































SO 

























































































CO 

r- 

s 
s 



10 20 30 40 SO 00 70 
FORWARD CURRENT (mA) 



Order Number: Lamp with Mounting Clip 

NSL5058 + NSC003 

See Package Outline B Page 5 



21 



fjgk National 

SlA Semiconductor 




NSL5070 Series T-1 Size Red LED Lamps 

NSL5072A Side View, Red Transparent-Lens 
NSL5076A Red Diffused-Lens 
NSL5077A Side View, Red Diffused-Lens 

General Description 



This special purpose series of GaAsP lamps are designed 
to satisfy your particular design requirement where 
either side viewing or extra lens height is needed. The 
NSL5072A is a small side view lamp while the NSL5076A 
retains all the characteristics of a standard T1 size lamp, 
except for a higher lens height. The NSL5077A com- 
bines these 2 features in a single lamp— side view plus 
extra lens height. Wide viewing angle and good ON-OFF 



Computers 

Indicator lamps 

Pilot lamps 

Circuit status 

Mobile and portable equipment 

Vending machines 



contrast characterize these small lamps. 


■ Medical instruments 






Features 

■ Wide viewing angle 

■ Wire wrap or solder leads 

■ IC compatible 

■ Reliable and rugged 

■ Low power consump'tion 

■ Long life 




Absolute Maximum Ratings 

DC Forward Current 50 mA 
Reverse Voltage 5.0V 
Power Dissipation 100 mW 

Derate Linearly 1.0 mW/°C above 25°C 
Peak Forward Current 1A 

1 jus Pulse, 300 pps 


Applications 




Operating and Storage Temperature 

Range -55°C to +1 00°C 


■ Appliances 




85/85 Temp.— Humidity 




l.27mW/°C 


■ Cameras 




Lead Temperature (Soldering 


I 230°C for 5 sec. 


Electrical and Optical Characteristics 


(25°C) 






PARAMETER 


CONDITIONS 


5072A 


5076A 


5077A 


UNITS 


Forward Voltage (Vp) 


lp = 20 mA 










Typ 




1.8 


1.8 


1.8 


V 


Max 




2.0 


2.0 


2.0 


V 


Reverse Breakdown Voltage (BVp) 


Ir=100juA 










Min 




5.0 


5.0 


5.0 


V 


Light Intensity (I) 


lp = 20 mA 










Typ 




0.35 


1.0 


0.35 


mcd 


Min 




0.15 


0.15 


0.15 


mcd 


Peak Wavelength 


lp = 20 mA 


660 


660 


660 


nm 


Spectral Width, Half- Intensity 


IF = 20 mA 










Typ 




40 


40 


40 


nm 


Light Rise and Fall Time, 10-90% 


50ft Sys 










Typ 




50 


50 


50 


ns 


Angle of Half-Intensity Off Axis 


IF = 20 mA 










Typ 




60 


60 


50 


degrees 


Capacitance 


V = 0, 1 MHz 










Typ 




75 


75 


75 


PF 



22 



Performance Characteristics Curves 



Light Intensity vs ' 
Ambient Temperature 




t M 

TEMPERATURE (°C) 



Forward Current (If.) »s 
Forward Voltage (Vp) 



Light Intensity vs 
Forward Current (If:) 

























< 41 
1 










































z 

£ 30 

K 






































I 


S 21 

s 

S it 


















, 






































/ 




















/ 




















*> 


f 





0.4 OJ 12 1J 

FORWARD VOLTAGE (V) 

































300 

£ 2M 


















































































































S 2*0 


























































u ISO 

> 


























































2 too 


























































so 

























































































0) 

i 



10 20 30 40 SO (0 70 

FORWARD CURRENT (mA) 



Relative Luminous Intensity 
vs Angular Displacement 
NSL5076A 

o io 20 jt 




Order Number NSL5072A 
See Package Outline G Page 6 

Order Number NSLS076A 
See Package Outline H Page 6 

Order Number NSL5077A 
See Package Outline I Page 6 



23 



P5J1 National 

4lA Semiconductor 



1 



h 



NSL5080 Series T-1 Size Red LED Lamps 

NSL5080 Uncolored Transparent- Lens 
NSL5081 Uncolored Diffused-Lens 
NSL5082 Red Transparent- Lens 
NSL5086 Red Diffused-Lens 

General Description Features 



The T-1 size (0.125 dia) series lamps are GaAsP, solid 
state LEDs encapsulated in a plastic package. They are 
electrically identical but optically different owing to 
different lens design. The lens configuration is designed 
for applications where space is a premium. High axial 
luminous intensity with a wide viewing angle and good 
ON-OFF contrast characterize these small lamps. 

Applications 

■ Appliances 

■ Cameras 

■ Computers 

■ Indicator lamps 

■ Pilot lamps 

■ Circuit status 

■ Mobile and portable equipment 

■ High density arrays 

■ Vending machines 

■ Test equipment 

■ Medical instruments 



■ Wide viewing angle 

■ Wire wrap or solder leads 

■ IC compatible 

■ Reliable and rugged 

■ Low power consumption 

■ Long life 

■ Mount on 0. 1 25 centers 

Absolute Maximum Ratings 

DC Forward Current 
Reverse Voltage 
Power Dissipation 

Derate Linearly 1.0 mW/°C above 25°C 
Peak Forward Current 

1 [t.% pulse, 300 pps 
Operating and Storage Temperature 

R ange -55° C to + 1 00° C 

85/85 Temp. - Humidity 1000 hrs 

Lead Temperature (Soldering) 230°C for 5 sec 



50 mA 

5.0V 

100 mW 

1A 



Electrical and Optical Characteristics (25°o 



PARAMETER 



CONDITIONS 



5080 


5081 


5082 


5086 


1.8 


1.8 


1.8 


1.8 


2.0 


2.0 


2.0 


2.0 


5.0 


5.0 


5.0 


5.0 


1.2 


2.4 


1.2 


2.4 


0.3 


0.3 


0.3 


0.3 


660 


660 


660 


660 


40 


40 


40 


40 


50 


50 


50 


50 


50 


60 


50 


60 


75 


75 


75 


75 



UNITS 



Forward Voltage (Vf) 
Typ 
Max 

Reverse Breakdown Voltage (BVr) 
Min 

Light Intensity (I) 
Typ 
Min 

Peak Wavelength 
Typ 

Spectral Width, Half-Intensity 

Typ 
Light Rise and Fall Time, 10-90% 

Typ 

Angle of Half-Intensity Off Axis 
Typ 

Capacitance 
Typ 



IF = 20 mA 

Ir = 100 juA 
IF = 20 mA 

IF = 20 mA 
IF = 20 mA 
50J2 Sys. 
IF = 20 mA 
V = 0, 1 MHz 



mcd 
mcd 



degrees 
PF 



24 



Performance Characteristics Curves 



CO 



Light Intensity vs 
Ambient Temperature 



2 *• 

£ He- 



Forward Current (lp) vs 
Forward Voltage (Vp) 















so 














< 40 

E 

Z 














£ 30 

B 
3 
U 














S 20 
I 


'■-.'■' 


;-■■ 










£ io 


•»•';:"- 




i. 

OPERA 


S 

TURE 


t 

rc) 


100 



0.4 0J U 1.0 2.0 
FORWARD V0LTA6E (V) 



Light intensity vs 
Forward Current dp) 

































300 
> 2S0 


















































































































£ 200 


























































Z 150 

> 


























































< 100 


























































K 

50 

























































































3. 
CD 
CO 



10 20 30 40 SO 00 70 
FORWARD CURRENT (mA) 



Relative Luminous Intensity 
vs Angular Displacement 
NSL5080, NSL5082 

r ir a* ar 




Relative Luminous Intensity 
vs Angular Displacement 
NSL5081, NSL5086 

0° 10° 20° 30° 




Order Number NSL5080 
See Package Outline E Page 5 



25 



■r^i^w ^ ■ _■_! . ■ 














££| National rncum,r,Mni i 
4lA Semiconductor 1 




SS3SSBte£fi 




NSL5250 Series Green LED Lamps 

NSL5252A Green, Transparent- Lens LED Lamp 
NSL5253A Green, Diffused-Lens LED Lamp 




^iMiSiMMbiisfet 


General Description 


Features 






These T1 3/4 size [0.200 inch (5 mm) dial lamps are 
solid state LED's, encapsulated in an epoxy package. 
They are electrically similar but optically different 
owing to different lens configuration. These devices may 
be panel mounted with a plastic adaptor clip, directly 
soldered into a printed circuit board or the leads may 


■ High intensity 

■ Wide viewing angle 

■ Wire wrap or solder leads 

■ IC compatible 

■ Low power consumption 






be wire-wrapped. 


Absolute Maximum Ratings 


Applications 

■ Pilot lights 

■ Indicator lights 

■ GO-NO GO indicators 

■ Test equipment 

■ Computers 

■ Appliances 


Forward Current, DC Of) 35 mA 
Reverse Voltage 5.0V 
Power Dissipation 105 mW 

Derate linearly 1.14 mW/°C above 25°C 
Peak Forward Current 1A 

1 jus pulse, 300 pps 
Operating and Storage Temperature 

Range -55°C to +100°C 
Lead Temperature (Soldering) 260 C C for 5 sec 


Electrical and Optical Characteristics 


(25°C) 






PARAMETER 


CONDITIONS 


NSL5252A 


NSL5253A 


UNITS 


Forward Voltage (Vf) 
Typ 


Ip = 20 mA 




2.2 




2.2 


V 


Max 






3.0 




3.0 


V 


Reverse Breakdown Voltage (BVr) 
Min 


Ir= 100 pA 




5.0 




5.0 


■#/' ' 


Luminous Intensity (1) 
Min 


Ip = 20 mA 




2.0 




0.8 


mcd 


Typ 






15.0 




1.5 


mcd 


Peak Wavelength 
Typ 


IF - 20 mA 




565 




565 


nm 


Spectral Width 
Typ 


IF = 20 mA 




40 




40 


nm 


Light Rise and Fall Time 10-90% 
Typ 


Step Change of If 
50 SI System 


50 




50 


ns 


Angle of Half-Intensity Off Axis 
Typ 


IF " 20 mA 




15 




30 


degrees 


Capacitance 
Typ 


Vp = 0,1 MHz 


75 




75 


pF 



26 



Typical Performance Characteristics 



Light Intensity vs 
Ambient Temperature 



Forward Current Op) vs 
Forward Voltage (Vp) Typ 



Light Intensity vs 
Forward Current (lp) 



IN 

>• 

| 1H 

z 

> 1M 

< 

" SO 































































SO 












J 










300 
at 

> 2S0 

t- 
v> 

5 MO 
z 

u ISO 
> 

< loo 

cc 
SO 


















































































1 « 


















































































1- 


















































£ 30 

K 








































/ 






































CJ 












/ 




































































k 20 












f 










$ 

£ to 


r 






































/ 
















































/ 














































































^ 











































o so 

TEMPERATURE TO 



(0 

i 

3. 
<D 
CO 



12 3 4 

FORWARO VOLTAGE (V) 



10 20 30 40 SO SO 70 

FORWARD CURRENT (mA) 



Order Number: 



NSLS252A 
NSLS2S3A 



LAMP WITH 

MOUNTING CLIP 

NSLS252A + NSCO03 

NSL52S3A + NSC003 



See Package Outline B Page 5 



27 



£K] National 

£jm Semiconductor 

NSL5274 T-1 Size Green LED Lamp 



PRELIMINARY 



General Description 



The NSL5274 is a GaP solid state green LED encap- 
sulated in an epoxy package. The lens configuration is 
designed for applications where space is a premium. 
High axial luminous intensity with a wide viewing angle 
characterize these small lamps. 



Applications 

■ Appliances 

■ Cameras 

■ Computers 

■ Indicator lamps 

■ Pilot lamps 

■ Circuit status 

■ Mobile and portable equipment 

■ High density arrays 

■ Vending machines 

■ Test equipment 

■ Medical instruments 



Features 

■ Wide viewing angle 

■ Wire wrap or solder leads 

■ IC compatible 

■ Reliable and rugged 

■ Low power consumption 

■ Long life 

■ Mount on 0.150 centers 



Absolute Maximum Ratings 

DC Forward Current 50 mA 

Reverse Voltage 5.0V 

Power Dissipation 100 mW 

Derate Linearly 1.0 mW/°C above 25 °C 

Peak Forward Current 1A 

1 ps pulse, 300 pps 
Operating and Storage Temperature 

Range - 55 °C to + 100 °C 

85/85 Temp.— Humidity 1000 hrs 

Lead Temperature (Soldering, 5 seconds) 230 °C 



Electrical and Optical Characteristics (25*0 



Order Number NSL5274 
See Package Outline F Page I 



' Parameter 


Conditions 


NSL5274 


Units 


Forward Voltage (V F ) 
Typ 
Max 


l F = 20mA 


2.2 
3.0 


V 
V 


Reverse Breakdown Voltage (BV R ) 
Min 


l R = 100/»A 


5.0 


V 


Luminous Intensity (I) 
Min 
Typ 


l F = 20mA 


0.4 
1.0 


mcd 
mcd 


Peak Wavelength 
Typ 


l F = 20mA 


565 


nm 


Spectral Width, Half-Intensity 
Typ 


l F = 20mA 


40 


nm 


Light Rise and Fall Time, 10-90% 
Typ 


500 System 


50 


ns 


Angle of Half-Intensity Off Axis 
Typ 


l F = 20mA 


45 


degrees 


Capacitance 
Typ 


V = 0, 1 MHz 


75 


PF 



28 



531 National 

£A Semiconductor 



PRELIMINARY 




NSL5350 Series Yellow LED Lamps 

NSL5352A Yellow, Transparent-Lens LED Lamp 
NSL5353A Yellow, Diffused-Lens LED Lamp 

General Description 

These T1 3/4 size [0.200 inch (5 mm) dia] lamps are 
solid state LED's, encapsulated in an epoxy package. 
They are electrically similar but optically different 
owing to different lens configuration. These devices may 
be panel mounted with a plastic adaptor clip, directly 
soldered into a printed circuit board or the leads may 
be wire-wrapped. 



Applications 

■ Pilot lights 

■ Indicator lights 

■ GO-NO GO indicators 

■ Test equipment 

■ Computers 

■ Appliances 



Features 

■ High intensity 

■ Wide viewing angle 

■ Wire wrap or solder leads 

■ IC compatible 

■ Low power consumption 

Absolute Maximum Ratings 

Forward Current, DC (If) 
Reverse Voltage 
Power Dissipation 

Derate linearly 1 .14 mW/°C above 25°C 
Peak Forward Current 

1 us pulse, 300 pps 
Operating and Storage Temperature 

Range -55°C to+100°C 

Lead Temperature (Soldering) 260°C for 5 sec 



35 mA 

5.0V 

105 mW 

1A 



CO 



3. 
CD 
CO 



Electrical and Optical Characteristics (25°o 



PARAMETER 


CONDITIONS 


NSL5352A 


NSL5353A 


UNITS 


Forward Voltage (Vp) 


IF = 20 mA 








Typ 




2.3 


2.3 


V 


Max 




3.0 


3.0 


V 


Reverse Breakdown Voltage (BVr) 


Ir = 100/uA 








Min 




5.0 


5.0 


V 


Luminous Intensity (I) 


lp = 20 mA 








Min 




10.0 


2.5 


mcd 


Typ 




45.0 


6.0 


mcd 


Peak Wavelength 


IF = 20 mA 








Typ 




585 


585 


nm 


Spectral Width, Half- Intensity 


IF = 20 mA 








Typ 




40 


40 


nm 


Light Rise and Fall Time 10-90% 


Step Change of If 








Typ 


50 ft System 


50 


50 


ns 


Angle of Half-Intensity Off Axis 


lp = 20 mA 








Typ 




15 


30 


degrees 


Capacitance 


Vp = 0,1 MHz 








Typ 




75 


75 


pF 



29 



(0 



(/> 



Typical Performance Characteristics 



Light Intensity vs 
Ambient Temperature 



Forward Current Op) vs 
Forward Voltage (Vp) Typ 



Light Intensity vs 
Forward Current <lp) 



200 
ISO 
100 
SO 





















































































300 
> 250 
£ 200 

h- 
Z 

uj ISO 

> 

< 100 

cc 
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so 

TEMPERATURE (°C) 



12 3 4 

FORWARD VOLTAGE (V) 



10 20 30 40 SO 00 
FORWARD CURRENT (mA) 



Order Number: 



LAMP 



LAMP WITH 
MOUNTING CLIP 
NSL5352A NSLS352A + NSC003 
NSLS3S3A NSL5353A + NSC003 
See Package Outline B Page 5 



30 



OT National 

SlA Semiconductor 


PRELIMINARY 


NSL5374 T-1 Size Yellow LED Lamp 


General Description 


Features 


The NSL5374 is a GaAsP/GaP solid state LED encap- 
sulated in an epoxy package. The lens configuration is 
designed for applications where space is a premium. 
High axial luminous intensity with a wide viewing angle 
characterize these small lamps. 


■ Wide viewing angle 

■ Wire wrap or solder leads 

■ IC compatible 

■ Reliable and rugged 

■ Low power consumption 

■ Long life 

■ Mount on 0.150 centers 


Applications 

■ Appliances 


Absolute Maximum Ratings 


■ Cameras 

■ Computers 

■ Indicator lamps 

■ Pilot lamps 

■ Circuit status 

■ Mobile and portable equipment 

■ High density arrays 

■ vending machines 

■ Test equipment 

■ Medical instruments 


DC Forward Current 50 mA 
Reverse Voltage 5.0V 
Power Dissipation 100 mW 

Derate Linearly 1.0 mW/°C above 25 *C 
Peak Forward Current 1A 

1 ms pulse, 300 pps 
Operating and Storage Temperature 

Range -40*Cto +100"C 
85/85 Temp.— Humidity 1000 hrs 
Lead Temperature (Soldering, 5 seconds) 230 °C 



CO 

i 



Electrical and Optical Characteristics (25-0 



Order Number NSL5374 
See Package Outline F Page 6 



Parameter 


Conditions 


NSL5374 


Units 


Forward Voltage (V F ) 
Typ 
Max 


l F = 20mA 


2.3 
3.0 


V 
V 


Reverse Breakdown Voltage (BVr) 
Min 


I r = 10OmA 


5.0 


V 


Luminous Intensity (I) 
Min 
Typ 


l F = 20mA 


1.5 
4.0 


mcd 
mcd 


Peak Wavelength 
Typ 


l F = 20mA 


585 


nm 


Spectral Width, Half-Intensity 
Typ 


l F = 20mA 


40 


nm 


Light Rise and Fall Time, 10-90% 
Typ 


500 System 


50 


ns 


Angle of Half-Intensity Off Axis 
Typ 


l F = 20mA 


45 


degrees 


Capacitance 
Typ 


V = 0, 1 MHz 


75 


PF 



31 



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(0 

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0) 



VWA National 

SlA Semiconductor 



PRELIMINARY 



NSL5750 Series High Efficiency Red LED Lamps 

NSL5752 Red Transparent-Lens LED Lamp 
NSL5753 Red Diffused-Lens LED Lamp 

General Description 

These T1 V* size (0.200" 5 mm dia) lamps are solid state 
LEDs, encapsulated in an epoxy package. They are elec- 
trically similar but optically different owing to different 
lens configuration. These devices may be panel mounted 
with a plastic adaptor clip, directly soldered into, a 
printed circuit board or the leads may be wire wrapped. 




Features 

■ High intensity 

■ Wide viewing angle 

■ Wire wrap or solder leads 

■ IC compatible 

■ Low power consumption 



Applications 

■ Pilot lights 

■ Indicator lights 

■ GO-NO GO indicators 

■ Test equipment 

■ Computers 

■ Appliances 



Absolute Maximum Ratings 

Forward Current, DC (l F ) 50 mA 

Reverse Voltage 5.0V 

Power Dissipation 100 mW 

Derate Linearly 1.0 mW/°C above 25 °C 

Peak Forward Current t 1A 

1 ms pulse, 300 pps 
Operating and Storage Temperature 

Range -40°Cto +100°C 

Lead Temperature (Soldering, 5 seconds) 230 °C 



Electrical and Optical Characteristics (25-0 



Parameter 


Conditions 


NSL5752 


NSL5753 


Units 


Forward Voltage (V F ) 
Typ 
Max 


l F = 20mA 


2.1 
3.0 


2.1 
3.0 


V 
V 


Reverse Breakdown Voltage (BV R ) 
Min 


l R = 100/tA 


5.0 


5.0 


V 


Luminous Intensity (I) 
Min 
Typ 


l F = 20mA 


17.0 
40.0 


3.0 
6.0 


mcd 
mcd 


Peak Wavelength 
Typ 

Spectral Width, Half-Intensity 
Typ 


l F = 20mA 
l F = 20mA 


635 
40 


635 
40 


nm 
nm 


Light Rise and Fall Time, 10-90% 
Typ 


Step Change of l F 
500 System 


50 


50 


ns 


Angle of Half-Intensity Off Axis 
Typ 

Capacitance 

Typ J 


l F = 20mA 
V F = 0, 1 MHz 


15 
75 


30 
75 


degrees 
pF 



32 



Typical Performance Characteristics 



Light Intensity vs 
Ambient Temperature 



Forward Current (l F ) vs 
Forward Voltage (V» Typ 



Light Intensity vs 
Forward Current (l F ) 



250 

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> 100 

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5" 

CO 



TEMPERATURE (°C) 



12 3 4 

FORWARD VOLTAGE (V) 



Order Number. 



10 20 30 40 50 60 70 
FORWARD CURRENT (mA) 



Lamp 



Lamp with 
Mounting Clip 



NSL5752 NSL5752 + NSC003 
NSL5753 NSL5753 + NSC003 
See Package Outline B Page 5 



33 



gj| National 



PRELIMINARY 



Semiconductor 

NSL5774 T-1 Size High Efficiency Red LED Lamp 



General Description 



The NSL5774 is a GaAsP/GaP solid state high efficiency 
red LED encapsulated in an epoxy package. The lens con- 
figuration is designed for applications where space is a 
premium. High axial luminous intensity with a wide view- 
ing angle characterize these small lamps. 



Applications 

■ Appliances 

■ Cameras 

■ Computers 

■ Indicator lamps 

■ Pilot lamps 

■ Circuit status 

■ Mobile and portable equipment 

■ High density arrays 

■ Vending machines 

■ Test equipment 

■ Medical instruments 



Features 

■ Wide viewing angle 

■ Wire wrap or solder leads 

■ IC compatible 

■ Reliable and rugged 

■ Low power consumption 

■ Long life 

■ Mount on 0.150 centers 



Absolute Maximum Ratings 

DC Forward Current 50 mA 

Reverse Voltage 5.0V 

Power Dissipation 100 mW 

Derate Linearly 1.0 mW/°C above 25 *C 

Peak Forward Current 1A 

1 mS pulse, 300 pps 
Operating and Storage Temperature 

Range - 40 *C to + 100 °C 

85/85 Temp.— Humidity 1000 hrs 

Lead Temperature (Soldering, 5 seconds) 230 °C 



Electrical and Optical Characteristics (25*0 



Order Number NSL5774 
See Package Outline F Page 6 



Parameter 


Conditions 


NSL5774 


Units 


Forward Voltage (V F ) 
Typ 
Max 


l F = 20mA 


2.1 
3.0 


V 
V 


Reverse Breakdown Voltage (BV R ) 
Min 


I r = 100mA 


5.0 


V 


Luminous Intensity (I) 
Min 
Typ 


l F = 20mA 


1.5 
5.0 


mcd 
mcd 


Peak Wavelength 
Typ 


l F = 20mA 


635 


nm 


Spectral Width, Half-Intensity 
Typ 


l F = 20mA 


40 


nm 


Light Rise and Fall Time, 10-90% 
Typ 


500 System 


50 


ns 


Angle of Half-Intensity Off Axis 
Typ 

Capacitance 
Typ 


l F = 20mA 
V = 0, 1 MHz 


45 
7 * 


degrees 
PF 



34 



£5| National 

id Semiconductor 

NSL5X124 Series LED Lamps 

NSL52124 0.220" Green Rectangular Legend Lamp 
NSL53124 0.220" Yellow Rectangular Legend Lamp 
NSL57124 0.220" High Efficiency Red Rectangular Legend Lamp 



September 1980 




Product Description 

This series of rectangularly shaped solid state in- 
dicators is available In green, yellow, and red. The rec- 
tangular lighted area is uniformly lit by a high perform- 
ance LED chip. 

Features 

■ 0.220" x 0.125" lighted area 

■ Stackable in X or Y direction 

■ High brightness—typically 3 mcd © 20 mA 

■ Solid state reliability ' 

■ Compact, rugged, lightweight 

■ No light leakage from unit sides 

■ Mounting grommet available (see MP6S) 

Applications 

■ Legend backlighting 

■ Illuminated pushbutton 

■ Panel indicator 

■ Bargraph meter 



Physical Dimensions inches (millimeters) 




X 

K 
9 

3. 
(D 
CO 



m 
o 

r- 
fi) 

3 
■o 



BJW AMI-UN) 



M 



aim 



\ 



UH 



T 

*.m 

041*1 

xi 



N LIGHTED AREA 

NH 

Note: Totorsnce ±0.010*(:t 0.254) unless specified 



Electrical and Optical Characteristics (25*c Free Mr Temperature) 



Parameter 



Forward Voltage (V F ) 
Typ 
Max 

Luminous Intensity 
Mln 
Typ 

Peak Wavelength 

Spectral Line Half Width 

Reverse Voltage (V R ) 

Mln 

Typ 
Reverse Current (l R ) 

Typ 

Max 

Capacitance 



Conditions 



l F = 20mA 

l F = 20mA 

l F = 20mA 
l F = 20mA 

I r = 100mA 

V R = 5.0V 
V = 



NSL52124 



2.0 
3.0 

1.0 
3.0 

565 

45 

5 
25 

20 
100 

45 



NSL53124 



2.0 
3.0 

1.0 
4.0 

585 

45 

5 
25 

20 
100 

45 



NSL57124 



2.0 
3.0 

1.0 
4.0 

635 

45 

5 
25 

20 
100 

45 



Units 



V 
V 

mcd 
mcd 

nm 

nm 

V 
V 

nA 

PF 



35-1 



Absolute Maximum Ratings 



Power Dissipation at 25*0 
Derate Linearly from 25 °C 
Storage and Operating Temperature 
Peak Forward Current 

(1 pS pulse width, 300 pps) 



105 mW Forward Current at 25*C 35 mA 

1.14mW/°C Reverse Voltage 5.0V 

-55°Cto100°C Lead Temperature (Soldering, 5 seconds) 260°C 
1A 



Typical Performance Characteristics (contm 



ued) 





NSL52124 












< 

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* 

£ 30 


















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1.4 1.8 1.1 2.0 2.2 2.4 2.6 2.1 3.0 
V F -F0RWARD VOLTAGE (V) 

FIGURE 1. Forward Current 
vs Forward Voltage 

NSL53124 



520 540 560 MO 600 620 040 660 610 

X-WAVELENGTH (am) 

FIGURE 2. Spectral Response 



1 5 10 IS 20 25 30 35 

If - FORWARD CURRENT (mA) 

FIGURE 3. Luminous Intensity 
vs Forward Current 



£ 40 



L « 



120 
100 

! - 

ft 

1 N 

> 

< 40 



1.4 1.1 U 2.0 2.2 2.4 2.6 2.1 3.0 
V F -F0RWARD V0LTA6E (V) 

FIGURE 4. Forward Current 
vs Forward Voltage 

























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.ow 










1 




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S20 540 5H 5N 60S 620 6416606M 

X-WAVELENGTH (rnn) 

FIGURE 5. Spectral Response 



5 10 15 20 25 30 35 

l F - FORWARD CURRENT (mA) 

FIGURE 6. Luminous Intensity 
vs Forward Current 





























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1.4 1.1 11 2.1 12 2.4 2.0 2.1 3.1 
Vf-FORWARD VOLTAGE (V) 

FIGURE 7. Forward Current 
vs Forward Voltage 



521S41StOS6tMll216406tl6tO 

X-WAVELENGTH (am) 

FIGURE 8. Spectral Response 



5 10 15 20 25 30 35 

l F - FORWARD CURRENT (mA) 

FIGURE 9. Luminous Intensity 
vs Forward Current 



35-1 



5£1 National 

£m Semiconductor 

NSL605X Series Red LED Lamps 

NSL6050 Water-Clear Lens 

NSL6051 Milk-White Diffused Lens 

NSL6052 Red Transparent Lens 

NSL6053 Light Red Diffused Lens 

NSL6055 Red Diffused Lens, Wide Viewing Angle 

NSL6056 Dark Red Diffused Lens 

Product Description 



September 1980 




Optical coupling 
Pilot lights 
Status indicators 



Solid state lamps of the NSL605X series are composed 
of standard red Gallium Arsenide Phosphide light emit- 
ting diodes encapsulated in epoxy packages of dif- 
ferent color shades and levels of diffusion to produce physical Dimensions Inches (millimeters) 
various lens effects. These lamps are exact second- 
source replacement of the General Instrument/Mon 
santo MV5050 series solid state indicators. 



Features 

■ High intensity red light source 

■ Low power requirements 

■ Long life— solid state reliability 

■ IC compatible 

■ Versatile mounting 

■ Mounting hardware available on request 

Applications 

■ Indicator lamps for front panels 

■ Illuminators for back-lighting 



Y^? 



hjx-iji) 

i_ 



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3. 
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30 

& 



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0J«) 

FLAT DENOTES 

CATHODE 



tun 



TotarancM ±0.018(±0Jei) 



Electrical and Optical Characteristics 

Typical Perfomance 
Characteristics 
see page 35-9 
MV505X Series 



35X3 




National 
Semiconductor 



NSL6X52 Series LED Lamps 

NSL6152 Orange Emitter, Transparent Orange Lens 
NSL6252 Green Emitter, Transparent Green Lens 
NSL6352 Yellow Emitter, Transparent Yellow Lens 
NSL6752 Orange-Red Emitter, Transparent Red Lens 



October 1980 




Product Description 



Physical Dimensions inches (millimeters) 



The NSL6X52 LED lamp series are LED emitters pack- 
aged in a plastic non-diffused lens of the same color as 
light from emitter. 




FLAT DEMOTES 
CATHODE 



(2.S4) 

Tolerances ±0.010(± 0.254) 



Typical Perfomance 
Characteristics 
see page 35-11 
MV5X52 Series 



C/> 

r- 

3. 
CD 
CO 

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m 

o 

r™ 
a) 

3 

"8 



35-5 



£5| National 

&4k Semiconductor 

NSL6X53, NSL6X54 Series LED Lamps 

NSL6153 Orange Emitter — Diffused Orange Lens 
NSL6154 Orange Emitter — Lightly Diffused Orange Lens 
NSL6253 Green Emitter — Diffused Green Lens 
NSL6254 Green Emitter — Lightly Diffused Green Lens 
NSL6353 Yellow Emitter — Diffused Yellow Lens 
NSL6354 Yellow Emitter — Lightly Diffused Yellow Lens 
NSL6753 Orange-Red Emitter — Diffused Red Lens 
NSL6754 Orange-Red Emitter — Lightly Diffused Red Lens 



October 1980 




Product Description 



Physical Dimensions inches (millimeters) 



The NSL6X53 and NSL6X54 series of LED lamps are LED 
emitters packaged in colored, diffused lenses. The 
NSL6X53 lens diffusion level produces a soft, wide angle 
emission pattern. The lighter diffusion level of the 
NSL6X54 lens produces a flood-light (narrow beam) effect. 




W 

/ B.BM 

msni 



im 

(2.54) 
FLAT DENOTES 
CATHODE 



C/> 

I— 

8 



2 

C/> 

CD 

3. 
(D 
W 

I™ 

m 
o 

r- 

Q) 

3 



Tolerance* ±0.010(± 0.254) 



Typical Perfomance 

Characteristics 

see page 35-13 

MV5X53, MV5X54 



35-7 



r^an MoKftnol 














September 1960 


id Semiconductor 










MV505X Series Red LED La 

MV5050 Watsr-Clsar Lent 

MV5051 Mllk-Whlte DlffuMd Lent 

MV5052 Red Transparent Lens 

MV5053 Light Rsd Dlff ussd Lsns 

MVS055 Rsd Dlffussd Lsns, Wlds Vlswlng A 

MV5056 Dark Rsd Dlffussd Lsns 


imps 








jigle 








Product Description 








Solid state lamps of the MV505X series are compose) 
of standard red Gallium Arsenide Phosphide light emi 
ting diodes encapsulated In epoxy packages of dl 
ferent color shades and levels of diffusion to produo 
(arious lens effects. These lamps are exact seconc 
source replacements of the General Instrument/Mor 
santo MVSOSO series solid state indicators. 

Features 


d ■ Optical coupling 
t- ■ Pilot lights 

■ Status Indicators 
i 

i. Physical Dimensions 

i- 


inches (millimeters) 


tun 

r 




■ High Intensity red light source 

■ Low power requirements 

■ Long life— solid state reliability 

■ IC compatible 

■ Versatile mounting 

■ Mounting hardware available on request 

Applications 


UN 

IMtl 

1 




MM 

(1JB 
\ 


w 


■ 
» 

LATKMTtt 
kTNOM 




t 






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UK-MI 


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II-UW 


■ Indicator lamps for front panels 

■ Illuminators for back-lighting 


TdtaranoM *O018(*aa81) 




Electrical and Optical Characteristics (25°c Free Air Temperature) 






Parameter 


Conditions 


MVSOSO 


MV6051 


MVS052 


MV6063 


MVS066 


MV5066 


Units 


Forward Voltage (V F ) 
Typ 
Max 


l F = 20mA 
l F = 20mA 


1-7 
2.2 


1.7 
2.2 


1.7 
2.2 


1.7 
2.2 


1.7 
2.2 


1.7 
2.2 


V 
V 


Luminous Intensity (V L ) 
Typ 
Min 


l F = 20mA 
l F = 20mA 


2.0 
0.5 


1.6 
0.4 


2.0 
0.7 


1.6 
0.5 


0.6 
0.1 


0.8 
0.2 


mcd 
mcd 


Peak Wave Length 


l F = 20mA 


670 


670 


670 


670 


670 


670 


nm 


Spectral Line Half Width 


l F = 20mA 


20 


20 


20 


20 


20 


20 


nm 


Capacitance 
Typ 


V = 


30 


30 


30 


30 


30 


30 


PF 


Reverse Voltage (V R ) 
Min 
Typ 


l R =100pA 
l R =100pA 


5 
25 


5 
25 


5 
25 


5 
25 


5 
25 


5 
25 


V 
V 


Reverse Current (l R ) 
Max 
Typ 


V R = 5.0V 
V R = 5.0V 


100 
20 


100 
15 


100 
5 


100 
5 


100 
5 


100 
5 


nA 


Rise Time 


10%-90% 
500 System 


50 


50 


50 


50 


50 


50 


ns 


Fall Time 


90%-10% 
50Q System 


50 


50 


50 


50 


50 


50 


ns 


Viewing Angle 


Figures 5 
and 6 


5Q 


72 


72 


80 


150 


110 


Degrees 



< 

en 
o 
en 
X 

(0 

<D 

S" 

CO 



m 

a 

r- 
» 

3 

CO 



35-9 



Absolute Maximum Ratings 

Power Dissipation @ 25 "Ambient 1 80 mW 

Derate Li nearly from 25 "C 2.0 m W/ °C 
Storage and Operating Temperatures -55 s Cto100°C 

Continuous Forward Current @ 25 °C 100 mA 

Continuous Forward Current @ 100 o C 15 mA 
Peak Forward Current (1 ps Pulse, 0.3% Duty Cycle) 
Reverse Voltage 
Lead Temperature (Soldering, 5 seconds) 



1.0A 

5.0V 

260 °C 



Typical Performance Characteristics 

(25 °C Free Air Temperature Unless Otherwise Specified) 



80 
H 
41 

za 





~ 1 — I — 
MVMM 














MVH52 














MVSK3- 














1 ' \/ 
















AJ 






on 


















































MVSk» 














1 1 



















1 1 


/ 












MVttsi^ \S 


f 










MV5M1<yj^ 










MVS050 


^O* 










































t- 


— hMVM 






























MVHH 








1 1 







U 1.4 1.1 1.1 2.0 12 

V F -F0RWARD VOLTAGE (V) 

FIGURE 1. Forward Current 
vs Forward Voltage 



a 20 40 80 10 100 

l F -F0RWARD CURRENT (mA) 

FIGURE 2. Luminous Intensity 
vs Forward Current 



28 40 SO N 

FORWARD CURRENT (mA) 

FIGURE 3. ROPvs 
Forward Current 



18 

n 

48 
28 



- 100 
S 









MVS0S8^/Slc 

■ms»an<SLs 











1° 10° 


20° 


100 
90 


•VO^A* lv 


osrn\ 




80 








70 


VvMiv^ 


KO/ylL 




80 






MV5M1 







00° 
70° 
80° 
80° 



830 848 850 BOO 870 880 080 

X-WAVEIENGTH (am) 

FIGURE 4. Spectral Response 

Order Information 



50X40X30X20X10% 



SOX40X30K20X10X 



FIGURE 5. Spatial Distribution 



FIGURE 6. Spatial Distribution 



Customer-ID 


will ship 






MV5050 


NSL6050 


+ 


NSC003 


MV5051 


NSL6051 


+ 


NSC003 


MV5052 


NSL6052 


+ 


NSC003 


MV5053 


NSL6053 


+ 


NSC003 


MV5055 


NSL6055 


+ 


NSC003 


MV5056 


NSL6056 


+ 


NSC003 



35-9 



£5| National 

SjA Semiconductor 



MV5X52 Series LED Lamps 

MV5152 Orange Emitter, Transparent Orange Lens 
MV5252 Green Emitter, Transparent Green Lens 
MV5352 Yellow Emitter, Transparent Yellow Lens 
MV5752 Orange-Red Emitter, Transparent Red Lens 



October 1980 




Product Description 

The MV5X52 LED lamp series are LED emitters pack- 
aged in a plastic non-diffused lens of the same color as 
light from emitter. 

Order Information 



Physical Dimensions inches (millimeters) 



S 
¥ 

CO 



m 

o 

r- 

0) 

3 

CO 



Customer-ID 


will ship 




MV5152 


NSL6152 + 


NSC003 


MV5252 


NSL6252 + 


NSC003 


MV5352 


NSL6352 + 


NSC003 


MV5752 


NSL6752 + 


NSC003 




0.100 
(2.54) 

FLAT DENOTES 

CATHODE 



Tolerances ±0.010(± 0.254) 



Electrical and Optical Characteristics 



Parameter 



Conditions 



MV5152 



MVS2S2 



MV5352 



MV57S2 



Units 



Forward Voltage (V F ) 
Typ 
Max 

Luminous Intensity (V L ) 
Min 
Typ 

Peak Wavelength 

Spectral Line Half Width 

Capacitance 
Typ 
Reverse Voltage (V R ) 

Min 

Typ 

Reverse Current (l R ) 
Max 
Typ 

Viewing Angle (Total) 



l F = 20mA 
l F = 20mA 

1 F = 20mA 
l F = 20mA 

l F = 20mA 

l F = 20mA 

V = 

l R =100 M A 
l R =100 M A 

V R = 5.0V 
V R = 5.0V 



2.0 
3.0 

17.0 
40.0 

635 

45 

45 

5 
25 

100 
20 

28 



2.2 
3.0 

2.0 
15.0 

565 

35 

45 

5 
25 

100 
20 

28 



2.1 
3.0 

10.0 
45.0 

585 

35 

45 

5 
25 

100 
20 

28 



2.0 
3.0 

17.0 
40.0 

635 

45 

45 

5 
25 

100 
20 

28 



V 
V 

mcd 
mcd 

nm 

nm 

PF 

V 
V 

nA 
Degrees 



35-11 



& 

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CO 

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a 

LU 

-J 

CO 
CD 

■c 

CM 

> 



Absolute Maximum Ratings 

Power Dissipation at 25 *C Ambient 105 mW 

Derate Linearly from 25 °C 1.14mW/*C 
Storage and Operating Temperatures - 55 *C to 100 "C 

Continuous Forward Current at 25 °C 35 mA 

Continuous Forward Current at 100 "C 10 mA 
Peak Forward Current (1 ps Pulse, 0.3% 

Duty Cycle) 1.0A 

Reverse Voltage 5.0V 

Lead Temperature (Soldering, 5 seconds) 230 "C 



Typical Performance Characteristics 

(25 *C Free Air Temperature Unless Otherwise Specified) 



< 40 

B 
►- 

| 3a 

K 
3 

g 20 
1 

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MVS1S2 /, 
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1.4 1.6 1.S 2.0 2.2 2.4 2.6 2.1 3.0 
V F - FORWARD VOLTAGE (VOLTS) 



S20S40500SC0600C20C40MOCO 

\- WAVELENGTH (mi) 



FIGURE 1. Forward Currant 
vs Forward Voltage 



FIGURE 2. Spectral Response 



100 
00 

1 « 

> 70 
| 00 

i » 
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1 1 







10 20 30 40 

l F - FORWARD CURRENT (mA) 

FIGURE 3. Brightness 
vs Forward Current 




FIGURE 4. Spatial Distribution 
(MV5352, MV5252, MV5152, MV5752) 



35-11 



^National 




October 1960 


mSm Semiconductor 




J 


r 


MV5X53, MV5X54 Series LED Lamps 


J 


/■ 




MV5153 Orange Emitter — Diffused Orange Lens 


^ 






MV5154 Orange Emitter — Lightly Diffused Orange Lens 


s 






MV5253 Green Emitter — Diffused Green Lens 








MV5254 Green Emitter — Lightly Diffused Green Lens 








MV5353 Yellow Emitter — Diffused Yellow Lens 








MV5354 Yellow Emitter — Lightly Diffused Yellow Lens 








MV5753 Orange-Red Emitter — Diffused Red Lens 








MV5754 Orange-Red Emitter — Lightly Diffused Red Lens 








Product Description Physical Dimensions inches (millimeters) 


The MV5X53 and MV5X54 series of LED lamps are LED ijm 




\/~ (U.M) 






emitters packaged in colored, diffused lenses. The »«> 




MV5X53 lens diffusion level produces a soft, wide angle t — /"""XT 








emission pattern. The lighter diffusion level of the | 












MV5X54 lens produces a flood-light (narrow beam) effect. i»± 

(I.M) 




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MV5254 NSL6254 + NSC003 j 






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MV5353 NSL6353 + NSC003 




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MV5354 NSL6354 + NSC003 aM) 








MV5753 NSL6753 + NSC003 t*.™**. ±o.oio<±o.2S4) 




MV5754 NSL6754 + NSC003 








Electrical and Optical Characteristics <25*c Free Air Temperature) 








Parameter 


Conditions 


MV5153 


MV5154 


MV5253 


MV52S4 


MV5353 


MV5354 


MV5753 


MV5754 


Units 


Forward Voltage 






















(V F ) 
Typ 


l F = 20mA 


2.0 


2.0 


2.2 


2.2 


2.1 


. 2.1 


2.0 


2.0 


V 


Max 


l F =20mA 


3.0 


3.0 


3.0 


3.0 


3.0 


3.0 


3.0 


3.0 


V 


Luminous Intensity 






















(V L ) 

Min 


l F = 20mA 


3.0 


3.0 


0.8 


0.9 


2.5 


3.0 


3.0 


3.0 


mcd 


Typ 


l F = 20mA 


6.0 


8.0 


1.5 


3.0 


6.0 


10.0 


6.0 


8.0 


mcd 


Peak Wavelength 


l F = 20mA 


635 


635 


565 


565 


585 


585 


635 


635 


nm 


Spectral Line Half 


l F = 20mA 


45 


45 


35 


35 


35 


35 


45 


45 


nm 


Width 






















Reverse Voltage 






















(Vr) 

Min 


I b = 100mA 


5 


5 


5 


5 


5 


5 


5 


5 


V 


Typ 


l R = 100ftA 


25 


25 


25 


25 


25 


25 


25 


25 


V 


Reverse Current 






















Max 


V R =5.0V 


100 


100 


100 


100 


100 


100 


100 


100 


mA 


Typ 


V H = 5.0V 


20 


20 


20 


20 


20 


20 


20 


20 


nA 


Viewing Angle 




65 


24 


65 


24 


65 


24 


65 


24 


Degrees 


(Total) 























2 



K 
t 

CO 



m 
o 

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si 

3 

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35-13 



Absolute Maximum Ratings 



Power Dissipation at 25"C Ambient 105 mW 

Derate Linearly from 25°C 1.14mW/°C 
Storage and Operating Temperatures - 55*C to 100*C 

Continuous Forward Current at 25 "C 35 mA 

Continuous Forward Current at 100°C 10 mA 
Peak Forward Current (1 p$ Pulse, 0.3% 

Duty Cycle) 1.0A 

Reverse Voltage 5.0V 

Lead Temperature (Soldering, 5 seconds) 230°C 



Typical Performance Characteristics 

(25 °C Free Air Temperature Unless Otherwise Specified) 



















MVS1S3 

MV51S4, 

MV5753 














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MV 


5353 
5354 








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1.4 1.0 1.0 2.0 22 2.4 2.6 2.0 3.0 
V f - FORWARD VOLTAGE (VOLTS) 



520 S40 500 500 000 020 040 0S0 000 

A- WAVELENGTH (nm) 



FIGURE 1. Forward Current 
vs Forward Voltage 



FIGURE 2. Spectral Response 




40%30%20%10% 




FIGURE 3. Spatial Distribution 
(MV5753, MV5353, MV5253, MV5153) 



FIGURE 4. Spatial Distribution 
(MV5754, MV5354, MV5254, MV5154) 



35-13 



fjWA National 

SSA Semiconductor 

MV5X124 Series LED Lamps 

MV52124 0.220" Green Rectangular Legend Lamp 
MV53124 0.220" Yellow Rectangular Legend Lamp 
MV57124 0.220" High Efficiency Red Rectangular Legend Lamp 



September 1980 




Product Description 



Physical Dimensions inches (millimeters) 



This series of rectangularly shaped solid state in- 
dicators is available in green, yellow, and red. The rec- 
tangular lighted area is uniformly lit by a high perform- 
ance LED chip. 

Features 

■ 0.220" x 0.125" lighted area 

■ Stackable in X or Y direction 

■ High brightness— typically 3 mcd @ 20 mA 

■ Solid state reliability 

■ Compact, rugged, lightweight 

■ No light leakage from unit sides 

■ Mounting grommet available (see MP65) 




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Legend backlighting 
Illuminated pushbutton 
Panel indicator 
Bargraph meter 



lira 
aim 



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(Mil) 



N LIGHTED AREA 

Note: Tolerance ±0.010"(± 0.254) unless specified 



Electrical and Optical Characteristics (25 °c Free Air Temperature) 



Parameter 



Conditions 



MV52124 



MVS3124 



MV57124 



Units 



Forward Voltage (V F ) 
Typ 
Max 

Luminous Intensity 
Min 
Typ 

Peak Wavelength 

Spectral Line Half Width 

Reverse Voltage (V R ) 
Min 
Typ 

Reverse Current (l R ) 
Typ 
Max 

Capacitance 



l F = 20mA 

l F = 20mA 

l F = 20mA 
l F = 20mA 

I r = 100mA 

V R = 5.0V 
V = 



2.0 
3.0 

1.0 
3.0 

565 

45 

5 
25 

20 
100 

45 
35-15 



2.0 
3.0 

1.0 
4.0 

585 

45 

5 
25 

20 
100 

45 



2.0 
3.0 

1.0 
4.0 

635 

45 

5 
25 

20 
100 

45 



V 
V 

mcd 
mcd 

nm 

nm 

V 
V 

nA 
vA 



Absolute Maximum Ratings 



Power Dissipation at 25°C 
Derate Linearly from 25°C 
Storage and Operating Temperature 
Peak Forward Current 

(1 pS pulse width, 300 pps) 



1 05 mW Forward Current at 25*C 35 mA 

1.14 mVWC Reverse Voltage 5.0V 

- 55*C to 100 o C Lead Temperature (Soldering, 5 seconds) 260°C 
1A 



Typical Performance Characteristics (Continued) 





51 

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1.4 1.1 1.1 2J 2.2 2.4 2.1 2.1 3.1 

V F -F0RWAR0 V0LTA6E (V) 

FIGURE 1. Forward Current 
vs Forward Voltage 





MV53124 












< 

1 4| 


















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5 M 


































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1.4 1.( U 2.1 2.2 2.4 2.1 2.1 3.0 

V f -F0RWAR0 VOLTAGE (V) 

FIGURE 4. Forward Current 
vs Forward Voltage 





MV57124 












? It 


















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u 

a 

5 M 


































i " 

a 

L '• 

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1.4 1.1 1J 2.1 2.2 2.4 2.8 2.1 3.1 

V F -F0RWAR0 VOLTAGE (V) 

FIGURE 7. Forward Current 
vs Forward Voltage 



121 
lit 

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520 540 SM SM Nt 020 640 Ht tM 

X-WAVELENGTH (urn) 

FIGURE 2. Spectral Response 



























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FIGURE 5. Spectral Response 





























A 


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a 

















8 5 10 15 20 25 30 35 

l F - FORWARD CURRENT (mA) 

FIGURE 3. Luminous Intensity 
vs Forward Current 



1. 

> 

M 

Z 

i 4 

M 

a 
a 

a 



D 5 10 15 20 25 30 35 

l F - FORWARD CURRENT (mA) 

FIGURE 6. Luminous Intensity 
vs Forward Current 



ll 
















> 

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z 
















z * 

CA 

a 
a 
£ 2 
















z « 
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B20Mt5MSNMt<20l40M0IM 

X-WAVELENGTH (mi) 

FIGURE 8. Spectral Response 



■ 5 10 15 20 25 30 35 

l F - F0RWAR0 CURRENT (mA) 

FIGURE 9. Luminous Intensity 
vs Forward Current 



35-15 



Constant Current LED 



National Semiconductor 
Application Note 153 
Peter Lefferts 
October 1975 



a 



INTRODUCTION 

The NSL4944 is a simple two-lead device normally used 
as an AC or DC indicator, yet can also be used as a 
rectifier and constant current source at the same time in 
associated circuitry- A number of such applications will 
be illustrated. Further, most of the regulating circuitry 
is not in series with the LED. This allows the complete 
regulated LED to operate at only about 300 mV more 
than a standard red LED. Thus the NSL4944 operates 
on half the voltage needed by previously available 
regulated or resistor LEDs. The device is rated for a 
maximum of 18 V forward and reverse. 

These characteristics provide several advantages. Un- 
loaded TTL gates provide enough voltage, in either high 
or low states, to directly drive the universal indicator. 
Size and weight can be saved in instruments with a 
number of indicator lights by reducing the size of filter 
capacitors or voltage regulators. The NSL4944 can 
operate on unfiltered DC or at somewhat reduced 
intensity on 3 to 12 VAC rms. Since the IC within the 
regulated LED blocks reverse voltage, the device can be 
used as a low voltage rectifier or polarity indicator. 

DESIGN FEATURES 

The LED and its current source, as illustrated in Figure 
1, both fit within a standard LED package. The typical 
operating voltages shown allow the device to operate 
with lower supplies and take up less room than an LED 
and component dropping resistor. 



ITYP-13-A 




^ NESATIVE LEAD 

O WIDER AT IAK 

OF MCKASE 

FIGURE 1. Equivalent Circuit 

Figure 2 shows how some of the operating features of 
the NSL4944 are achieved. The rectifying characteristic 
occurs because the only input to the device passes 
through the IC's PNP emitters. These have a high 
reverse voltage in standard linear processing. The voltage 
reference and comparison amplifier operate from the 
same low voltage that the LED does. The big PNP 
transistor which passes both I|_ed ancl 'ref can be 
operated almost in saturation since the comparison 
amplifier can pull the PNP base down to only one volt 
from common. 




FIGURE 2. Simplified Schematic 

INDICATOR POWERING 

The following figures contain some of the innumerable 
ways of providing power to the NSL4944. 

Power and parts count is minimized by powering the 
indicator from a low voltage transformer winding as 
shown in Figure 3. This method, however, provides only 




FIGURE 3. AC Power 

half intensity light, but the apparent visual decrease is 
not as great. Some flicker occurs if the observer moves 
his head rapidly. The supply of Figure 4 will provide 
up to 87% of maximum light output. The bulk of a 
filter capacitor is still not needed, and at 12 VAC in, 
flicker will be almost imperceptible since the LED "off" 
periods will be less than a millisecond. In both situations, 
the indicator may be switched a number of ways, 
including bipolar transistors, since only DC can pass 
through the indicator. 




4 -13 VAC 

FIGURE 4. Unfiltered DC Power 



37 




10 VAC 

FIGURE 5. Minimizing DC Filtering 

As shown in Figure 5, full intensity and zero possible 
flicker are achieved by minimal DC filtering. The small 
capacitor shown operates with 10 V p-p ripple and only 
about 8 V average DC, while the constant current drain 
characteristics of the NSL4944 allow only a few percent 
change in light intensity. If a system or instrument with 
a regulated supply has a number of LED indicators, 
regulator size and dissipation can be minimized by 
powering the regulated LEDs from the unregulated 
voltage. 



J 


-M- 


\My 


— < 








h 


-M- 




LM109H 
REG 


i 


• — 







TTL stage goes much closer to ground than to the 5 V 
supply. Therefore, Figure 7-C requires a 3.5 V supply 
for the indicators to have complete on-off switching. 




A 
Low Indicator 



B 



High Indicator 
FIGURE 7. TTL Indicators 



Combination 



FIGURE 6. Unregulated DC 



CIRCUIT APPLICATIONS 

In many circuits or small instruments the need for a 
constant current source or current limiter arises. FETs 
can generally only be used as low current sources, so for 
10 mA or more, construction of a current source 
requires 3, 4, or more parts. If an indicator or pilot light 
is also needed, the regulated LED may be a very 
economical source of the needed constant current. 

The examples below illustrate all three characteristics of 
the NSL4944. It is a combined rectifier, constant current 
source, and pilot light. 



LOGIC APPLICATIONS 

The low operating voltage and constant current charac- 
teristics make the regulated LED an ideal status indicator 
for digital circuitry. An interesting fact to keep in mind 
is that full regulator current is not needed to light the 
LED. If, for example, only 8 mA is available (from a 
voltage of 1.6 to 1.9 V) the LED will light at a some- 
what reduced intensity. The regulator will be switched 
full on instead of current -limiting . . . but in such a 
situation it doesn't matter. 

Any circuit capable of supplying 10 to 20 mA and a 
voltage swing of at least 1 V can switch the NSL4944 
from an off to an on state. Within 25°C of room tem- 
perature, an input voltage of 1.3 V will produce little or 
no light, and 2.3 V will produce 70% to 90% of full 
output. However, with a small signal change, the pre- 
existing biases must be correct. The output swing of a 




SMALL BATTERY TRICKLE CHARGER 



SHORTED SCR INDICATOR 



FIGURE 8. 

Constant currents have a number of circuit or equipment 
design uses. Some of these have been combined for 
illustration in Figure 9. A number of LEDs can "share" 
a single constant current LED. Further, any of the 
ordinary LEDs can be turned on and off by a shunting 
switch without affecting operation of any of the others. 




LED THERMISTOR 



VOLTAGE DIVIDER 




FIGURE 9. Uses for Constant Current 



38 



In equipment with unregulated supplies, or supplies 
having some unfiltered ripple, the 20,000 ft impedance 
of the NSL4944 current source will be helpful. Supply 
ripple and variation passed on to Zener diodes, thermis- 
tors, and low value voltage divider bias sources will be 
greatly reduced. The sensitivity of low value thermistors 
to temperature changes will be increased. If practical, 
the regulated LED should be put in the same, or similar 
temperature environment as the thermistor used for 
temperature measurement. Otherwise a 20 to 40 degree 
temperature change at the LED would lead to an 
apparent one degree change sensed at the thermistor. 
Multiple current sources find use in some audio ampli- 
fier designs, and in power op-amp modules. 




FIGURE 10. Series NSL4944* 

There are some characteristics of seriesed regulated 
LEDs, and current sources in general, that should be kept 
in mind. All the LEDs will light properly, and the string 
will run at the current of the least current source. This 
lowest value source will absorb most of the supply 
voltage, with the other LEDs having only the starting 
voltage of about 2 V across them. Thus the maximum 
forward voltage increases only slightly as more devices 
are added. In the example above it would be 22 V. 
However, due to non-linear reverse current characteristics, 
maximum reverse voltages can be added. 




in » ) | VvV— ' i iTsMa* 



; uk y TO AUDIO 

820 12 > CABLE 

ETC 



FIGURE 11. Currant Limiting and Short Protection 

A current source can also be a current limiter. Figure 1 1 
shows an NSL4944 put in the collector of an emitter 
follower such as might be used in a pre-amp or mike 
mixet cable driver. 

Normally voltage across the LED is only 2 V, allowing 
almost full supply-to-supply swing of the emitter fol- 
lower output. In comparison a limiting resistor would 
either greatly increase output impedance, or severely 
limit output swing. However, if the output cable is 
accidentally shorted, only a little more than the rated 
current of the LED will flow. Output transistor dissipa- 
tion actually decreases under emitter short conditions. 




SIBMA SENSITIVE RELAY 
4.8 mA 
2300 ft 



FIGURE 12. Six Second Time Delay 

Logically, a constant current source is helpful in design- 
ing time delay circuits. If the circuit of Figure 12 were 
built with a resistor, the timing period would only be 
half the amount shown, and timing would vary over 50% 
with the supply variations shown, 
instead, the current regulated LED is still drawing within 
10% of full current when the relay reaches its 11 V pull- 
in voltage. The 14 to 18 V supply variation will produce 
only about a 3% timing variation, a considerable im- 
provement. Variations due to temperature arid electro- 
lytic capacitor tolerances will remain, however. 




TRIP POINT' 2 v 



(HIGH POWER SUBSTITUTION] 

FIGURE 13. Use as Active Load 



The lamp-driver Schmitt of Figure 13 illustrates a still 
further use of the NSL4944's constant current source. 
Substituting a current source for the collector resistor 
increases the useful voltage gain of Qi . Further, almost 
full base current remains available to Q2, even when 
supplying 12 V output, which would not be possible 
using a resistor. When the lamp and Q2 are off, most of 
the LED current flows in the 100 SI resistor, thus 
determining the circuit's switching or trip point of 2 V. 

With Q1 saturated, Q2 still provides a volt to the bulb, 
contributing some preheating and reducing the bulb's 
starting current surge. On, Q2 provides the bulb with 
12V due to the minimum voltage drop in the constant 
current LED. The 6.8k feedback resistor sets hysteresis 
at a measured 50 mV at the input. This can be varied 
without having to change the rest of the circuit. 10k 
provides almost "0" hysteresis (undesirable and unstable) 
while 2k sets a hysteresis of 0.5 V. 



39 



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S 



CONCLUSION 

A number of applications have been examined for a 
highly improved two-lead LED/IC. Its indicating capa- 
bilities, high reverse voltage, and wide constant current 
range may make it the most useful of the two-lead, 
hence simple to use, IC devices. To begin with, it can be 
lit from AC, unfiltered DC, and very poorly filtered or 
regulated DC with a savings in parts or size. 

The NSL4944 may be driven from the 1 to 1.5 V swing 
of TTL circuitry, to the 15 to 18 V swing of Linear and 
MOS circuits. Its rectifying capabilities allow it to act as 



a small battery, charger or reverse voltage monitor for 
power supplies, batteries, or low voltage SCRs. For all 
these, and the following functions, the LED "on" 
indication is in addition to the constant current circuit 
function performed. The device's constant current can 
power other LEDs, Zeners, thermistors, or other current 
or voltage sources. It has been shown that the current 
regulated LED can be a current limiter, a timing element, 
or an active load while simplifying and improving circuit 
performance. 



40 



National's LED numeric arrays are PC board 
mounted, magnified, monolithic, 7-segment red digits 
arranged in various combinations of up to 14 digits 
per array. These arrays, with digit heights of 100, 110 
and 140 mils (254, 2794 and 3.556 mm) are intended 
for applications requiring small, low cost numeric in- 
dication. 



PLASTIC BUBBLE LENS 




PCB 



Applications for these devices are no longer limited 
only to calculator sticks or LED watches. Other ap- 
plications include: 

■ Industrial controls 

■ Data terminals 

■ Instrumentation 

■ Timers 

■ Hand-held instruments 

■ Event counters 

All LED arrays manufactured by National Semicon- 
ductor have the prefix NSA 



41 



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LED Numeric Array Selection Guide 



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42 



LED Numeric Array Cross Reference 



Part Number 



Hewlett-Packard 

5082-7240 
5082-7241 
5082-7442 
5082-7444 
5082-7447 

Texas Instruments 

TIL379-12 

TIL393-8 

TIL393-9 



Description 



NSC Device 



Notes 



0.102" (2.59 mm) 8-digit array 
0.102" (2.59 mm) 9-digit array 
0.100" (2.54 mm) 12-digit array 
0.100" (2.54 mm) 14-digit array 
0.112" (2.85 mm) 14-digit array 

0.106" (2.69 mm) 12-digit array 
0.102" (2.59 mm) 8-digit array 
0.102" (2.59 mm) 9-digit array 



NSA1188 

NSA1198 

NSA7120 

NSA5140A 

NSA5140A 

NSA7120 
NSA1188 
NSA1198 



E 

E 

B 

B, C, D, E 

C,D, E 

D 
A 
A 



m 
o 



3 

CD 

3. 
O 

> 

3 

»< 

o 

3 
o> 

o> 

<D 

3 

3 

o 

CD 



Not**: A— Direct replacement 

B— Minor difference in digit size 
C— Minor difference in PC board length 
D— Difference in pin out 
E— Difference in pin location 



43 



OT National 

mm Semiconductor 








mKm 


■■ ■■■ ^-^i:-W^.:M^:0'y. 




NSA0028, NSA0038 0.100 Inch (2-54 mm) 
LED Numeric Arrays 




General Description 






The NSA0038 is a 3-digit monolithic GaAsP PC board 
mounted numeric array. Each digit comprises 7 seg- 
ments plus right hand decimal point. The array is com- 
mon cathode and the anodes are internally connected 
for multiplexing. Simple interface circuits may be 
used for TTL, DTL or MOS operation. 


■ Industrial controls 

■ Data terminals 

■ Instrumentation 

■ Electronic test and measurement equipment 

■ Microprocessor based systems 


The NSA0028 is a 2-digit version of the NSA0038. 






The clear lens of the array package provides excellent 
light transmission and visibility over a wide angle. 

PC board type terminals allow easy connection by 
wire or pin soldering or with a card-edge connector. 
The thin package allows significant size reduction for 
high density electronic equipment. 

Applications 

■ Timers 

■ Event counters 

■ Digital instruments 


Absolute Ratings 

Average Current per Segment 

Peak Current per Segment 

Reverse Voltage 
Digit Current Pulse Width 
Operating and Storage Temperatures 
Relative Humidity at 35° C 
Terminal Temperature (Soldering, 
5 seconds) 


0.25 mA min, 

7.0 mA max 

2.5 mA min, 

70 mA max 

3.0V min 

1 .0 ms max 

20° C to +70°C 

98% max 

230°C max 


Electrical and Optical Characteristics t a = 25°c Room Temperature 




PARAMETER 


CONDITIONS 


MIN 


TYP M 


AX 


UNITS 


Segment Light Intensity (Peak) 


2.5 mA/Seg. 


Peak 


0.16 


0.37 




mcd 


Digit Light Intensity (Peak) 


2.5 mA/Seg. 


Peak 


1.28 


2.96 




mcd 


Segment Forward Voltage 


5.0 mA/Seg. 


DC 




1.65 2 


.0 


V 


Reverse Voltage 


100/iA/Seg. 




3.0 


8.0 




V 


Intensity Matching 








±33 




% 


Peak Wavelength 








660 




nm 


Spectral Width, Half Intensity 








40 




nm 


Viewing Angle, Off Axis, Horizontal 


Axial Point 






21 




Degrees 


Viewing Angle, Off Axis, Vertical 


Axial Point 






23 




Degrees 



44 



Recommended Numeric Array Processing 



E 



The NSA0028, NSA0038 array is constructed on a 
standard printed circuit board substrate and covered 
with a plastic lens. 

The edge connector tab will stand a temperature of 
230° C for 5 seconds. 

The display lens area must not be elevated in tem- 
perature above 70°C. To do so will result in permanent 
damage to the display. 

It is recommended that only localized cleaning with 
a cotton swab on external surfaces be performed after 
soldering. 

Physical Dimensions and Pin Connections inches (millimeters) 



Only rosin core solder, solid core solder and low tem- 
perature deactivating fluxes are recommended. Rec- 
ommended post solder cleaning solvents are Freon 
TF, Isopropanol, Methanol or Ethanol. These solvents 
are recommended only at room temperature and short 
time periods. 

The use of other solvents or elevated temperature use 
of the recommended solvents may cause permanent 
damage to the lens or the display. 



£ 




PIN NO. 


ELECTRICAL 
CONNECTION 


1 


NC 


2 


Digit 2 Cathode 


3 


Segment E Anode 


4 


Segment C Anode 


5 


Segment D Anode 


6 


NC 


7 


Digit 3 Cathode 


8 


Segment G Anode 


9 


Segment F Anode 


10 


Segment B Anode 


11 


Segment A Anode 



0.54) 014] 

Order Number NSA0028 




— •— .T=r "** 



Not* 1: Material: superpunch or approved equivalent. 
Not* 2: All tolerances ±0.015/(0.38). 

Order Number NSA0038 





ELECTRICAL 


PIN NO. 


CONNECTION 


1 


Digit 1 Cathode 


2 


Digit 2 Cathode 


3 


Segment E Anode 


4 


Segment C Anode 


5 


Segment D Anode 


6 


Segment DP Anode 


7 


Digit 3 Cathode 


8 


Segment G Anode 


9 


Segment F Anode 


10 


Segment B Anode 


11 


Segment A Anode 



Segment Designation 

o 

LI. 

5° Segment Angle 



45 



a 



National 
Semiconductor 




NSA500 Series 0.100 Inch (2-54 mm) LED Numeric Aitays 



General Description 



The NSA500 series features a 0.100 inch non-magnified 
monolithic digit with extremely wide viewing angle. 
These devices are common cathode GaAsP LED's 
with each digit comprised of seven segments with 
right hand decimal point. Eight inputs are provided 
for selection of the appropriate segment and decimal 
(anodes) and separate inputs for digit (cathodes) 
selection. The anodes are internally interconnected for 
multiplexing. Simple interface circuits may be used for 
TTL, DTL, or MOS operation. 

The red faceplate of the display package provides 
excellent visual contrast and ease of visibility. 

Applications 

■ Digital instruments 

■ Industrial controls 

■ Data terminals 



Instrumentation 

Electronic test and measurement equipment 

Clocks and timers 

Hand held calculators 

Desk calculators 



Absolute Ratings 



0.7 mA min, 5.0mA max 
7.0mA min, 60mA max 



Average Current 

per Segment 

Peak Current 

per Segment 

Reverse Voltage 3.0V max. 

Operating and Storage Temperatures — 20° C to +70°C 

Relative Humidity at +35°C 98% max. 

Terminal Temperature 230°C max. 

(Soldering, 5 seconds) 



Electrical and Optical Characteristics t a = +25°c Room Temperature 



PARAMETER 


CONDITIONS 


MIN 


TYP 


MAX 


UNITS 


Segment Light Intensity (Peak) 


7.0m A/Segment Peak 


0.07 


0.2 




mcd 


Digit Light Intensity (Peak) 


7.0m A/Segment Peak 


0.56 


1.6 




mcd 


Segment Forward Voltage 


7.0mA/Segment DC 




1.65 


2.0 


V 


Reverse Voltage 


100/i A/Segment 


3.0 


8.0 




V 


Intensity Matching 






±33 




% 


Peak Wavelength 






660 




nm 


Spectral Width, Half-intensity 






40 




nm 


Viewing Angle, Off Axis, 


Undistorted 




±60 




degrees 


Horizontal 













46 



Custom Options NSA500 Series 

■ Number of digits. 6-^9 

■ Number of decimal points, maximum of 9 

■ Minus signs can be substituted in place of any digit. 
Address line will be Segment G 

■ A decimal point and/or colon can be substituted for 
any digit and placed in any segment position (Will 
be electrically connected to that segment address 
line) 

■ For all variations from the standard products it is 
recommended the factory be contacted 



Recommended Numeric 
Array Processing 

The NSA500 Series arrays are constructed on a standard 
printed circuit board substrate and covered with a plastic 
lens. 

The edge connectors tab will stand a temperature of 
230° C for 5 seconds. 

Standard Digit Positions 



The display lens area must not be elevated in temperature 
above 70° C. To do so will result in permanent damage to 
the display. 

It is recommended that the back of the display be masked 
off with low tac masking tape during flux and clean 
operations, to prevent condensation of flux or cleaner on 
the underside of the lens. 

It is also recommended that only localized cleaning with a 
cotton swab on external surfaces be performed after 
soldering. 

Only rosin core solder, solid core solder and low tempera- 
ture deactivating flux are recommended. Recommended 
post solder clean solvents are Freon TF, Isopropanol, 
Methanol or Ethanol. These solvents are recommended 
only at room temperature and short time periods. 

The use of other solvents or elevated temperature use of 
the recommended solvents may cause permanent damage 
to the lens or the display. 

There are a number of edge connectors which can also be 
used with these display. 



NSA568* 



a a a a a a 

HUT I DIBIT 2 0IGIT1 OIGITI OIGITI DIGIT I 



\^®tf®®m®$®®®m®® 



1 1 4 SI 7 1 1 W II 12 II M » U 17 II 



NSA578* 



a a a a a a a 

DIGIT I DIGIT 2 DIGIT 1 0IGIT4 DIGIT! OIGITI DIGIT 7 



#fr®#^flfl®(ft®®fl®®ftft 



II ) 4 S I II I W II 12 I] M It II II II 



NSA588* 








a a a a a 

DIGIT I OIGITI DIGIT 1 OIGITI DIGIT 1 


a 

OIGITI 


a a 

DIGIT) DIGIT 1 


y>m®&®®®m®®<, 


WQ®$® 



I 2 1 I t I 7 I I II II 12 II M IS II 17 II 

' Built to order only. For small quantities, use NSA598. 



47 



(0 
0) 



* 



Standard Digit 
Connections Tb 


Position 


S (Continued) 

NSA598 












a a a a a a a a a 

DIGIT 1 DIGIT! DIGIT J DIGIT 4 OIGITS DIGIT 1 DIGIT J DIGIT 1 DIGIT t 


^tfftfttf®®®®®®®®®®®®® 




1 2 3 4 S 1 7 t t 10 II 11 13 14 IS If 17 II 

TYPICAL CLOCK VARIATION 










IE: IE : IE 

OIGITI DIGIT I DIGITS DIGIT 4 DIGITS OIGITS DIGIT 7 DIGITS 


^<^®ftm®®®®®®®®®®® 


ible 


||] 4 S (7 S S 10 II IJ 11 » IS IS 17 II 




PIN CONNECTIONS 


NSA568 


NSA578 


NSA588 


NSA598 


ANODE OR CATHODE 


1 
2 
3 


NC 
NC 
Segment C 


NC 
NC 
Segment C 


NC 
NC 
Segment C 


NC 

Digit 1 
Segment C 


No Connection 

Cathode 

Anode 


4 
5 
6 


NC 
D.P. 
Digit 1 


Digit 1 
D.P. 
Digit 2 


Digit 1 
D.P. 
Digit 2 


Digit 2 
D.P. 
Digit 3 


Cathode 

Anode 

Cathode 


7 
8 
9 


Segment A 
Digit 2 
Segment E 


Segment A 
Digit 3 
Segment E 


Segment A 
Digit 3 
Segment E 


Segment A 
Digit 4 
Segment E 


Anode 

Cathode 

Anode 


10 
11 
12 


Digit 3 
Segment D 
Digit 4 


Digit 4 
Segment D 
Digit 5 


Digit 4 
Segment D 
Digit 5 


Digit 5 
Segment D 
Digit 6 


Cathode 

Anode 

Cathode 


13 
14 
15 


Segment G 
Digit 5 
Segment B 


Segment 6 
Digit 6 
Segment B 


Segment G 
Digit 6 
Segment B 


Segment G 
Digit 7 
Segment B 


Anode 

Cathode 

Anode 


16 
17 
18 


Digit 6 
Segment F 
NC 


Digit 7 
Segment F 
NC 


Digit 7 
Segment F 
Digit 8 


Digit 8 
Segment F 
Digit 9 


Cathode 

Anode 

Cathode 



48 



Typical Performance Characteristics (25 °o 

Light Intensity vs Ambient 
Temperature 


£ MO 

> 

5 '*o 

z 

> IN 

< 

* SO 










































































M 


TE 



•PER* 


S 

TUBE 




100 





Forward Current vs 








Forward Voltage 


e 


00 

so 


ALL SEGMENTS ANO Of 


' 




z 

s 


MOTH 10% DUTY CYCLE j 






cc 










/ 






i. 












/ 






z 


30 
20 










/ 






CC 








1 
















1 








CC 


10 
















s 

cc 









J 










1.0 1.S 2.0 2. 








FORWARD VOLTAGE (V) 





2 



(D 
CO 



Physical Dimensions and Pin Connections inches (millimeters) 




^ft^ftffftftftftftTTTTftftftftftl| rx' 



RED FACE PLATE 



r 



in 



&BS> OIA PAD 
1 778 " 

18 PLACES 




19 PLACES 



Note 1: Material: Super punch circuit board or approved equivalent. 
Note 2: 9 digits on 0.200/(5.080) centers. 



Order Number NSAS98 for 9-dtgit unit 
Special numbers are assigned for Custom Units NSASXX 



Segme nt Designation 



J, 



49 



gg National 

Slm Semiconductor 




NSA1100 Series 0.100 Inch (254 mm) 9-Digit 
LED Numeric Arrays 



General Description 



Applications 



The NSA1 100 Series uses monolithic digits and can have 
up to nine digits. These devices are common cathode 
GaAsP LED, with an apparent 0.100 inch character 
height. Each digit comprises 7-segments with a right 
hand decimal point. Eight inputs are provided for 
selection of the appropriate segments and decimal 
(anodes) and separate inputs for digit (cathodes) se- 
lection. The anodes are internally interconnected for 
multiplexing. Simple interface circuits may be used for 
TTL, DTL, or MOS operation. 



The clear lens of the display package provides excellent 
light transmission and ease of visibility over a wide angle. 
The package is also designed to be readily incorporated 
into the system. PC board type terminals allow easy con- 
nection by wire or pin soldering or with cardedge 
connector. The thin package allows significant size 
reduction for high density electronic equipment. These 
devices are designed to be used with a clear red filter. 



Hand held calculators 

Desk calculators 

Digital instruments 

Industrial controls 

Data terminals 

Instrumentation 

Electronic test and measurement equipment 



Absolute Ratings 

Average Current per 

Segment 
Peak Current per Segment 
Reverse Voltage 
Digit Current Pulse Width 
Operating and Storage 

Temperatures 
Relative Humidity at +35°C 
Terminal Temperature 

(Soldering, 5 seconds) 



0.25 mA min, 7.0 mA max 

2.5 mA min, 70 mA max 

3.0V max 

1.0 ms max 

-20°C to +70°C 
98% max 

230°C max 



Electrical and Optical Characteristics t a = 25°c Room Temperate 



PARAMETER 



CONDITIONS 



MIN 



TYP 



MAX 



UNITS 



Segment Light Intensity (Peak) 
Segment Forward Voltage 
Reverse Voltage 
Intensity Matching 
Peak Wavelength 
Spectral Width, Half-Intensity 
Viewing Angle, Off Axis, Horizontal 
Viewing Angle, Off Axis, Vertical 



2.5 mA/Segm. Peak 
5.0 mA/Segm. dc 
100juA/Segm. 



0.16 



3.0 



0.37 
1.65 
8.0 
±33 
660 
40 
19 
19 



2.0 



mcd 

V 

V 

% 

nm 

nm 

degrees 

degrees 



50 



Custom Options NSA11XX 

■ Number of digits, 6—9 

■ Number of decimal points, maximum of 9 

■ Minus signs can be substituted in place of any digit 
Address line will be Segment G 

■ A decimal point can be substituted for any digit and 
placed in any segment position (Will be electrically 
connected to that segment address line) 

■ For all variations from the standard products it is 
recommended the factory be contacted 

Recommended Numeric 
Array Processing 

The NSA1100 Series arrays are constructed on a stand- 
ard printed circuit board substrate and covered with 
a plastic lens. 

The edge connectors tab will stand a temperature of 
230°C for 5 seconds. 

The display lens area must not be elevated in tempera- 
ture above 70°C. To do so will result in permanent 
damage to the display. 



It is recommended that the back of the display be 
masked off with low tac masking tape during flux and 
clean operations, to prevent condensation of flux or 
cleaner on the underside of the lens. 

It is also recommended that only localized cleaning 
with a cotton swab on external surfaces be performed 
after soldering. 

Only rosin core solder, solid core solder and low temper- 
ature deactivating flux are recommended. Recom- 
mended post solder clean solvents are Freon TF, 
Isopropanol, Methanol or Ethanol. These solvents are 
recommended only at room temperature and short time 
periods. 

The use of other solvents or elevated temperature use of 
the recommended solvents may cause permanent damage 
to the lens or the display. 

There are a number of edge connectors which can also 
be used with these displays. 



Standard Digit Positions 



NSA1166 




DIGIT 1 DIGIT 2 DIGIT 3 DIGIT 4 DIGIT 5 DIGIT 6 




'<§) Co) Id) <5> (of (6) (6) (6) (6) (6) Co) Co) (p) C6) Co) Co) Co) (©) 



12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 

NSA1188* 




DIGIT 1 DIGIT 2 DIGIT 3 DIGIT 4 DIGIT 5 DIGIT 6 DIGIT 7 DIGIT 8 




® Co) to) Co) Co/Co) Co) Co) Co) Co) Co) Co) o) (o) Co) (o) co) (© 



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 
' Built on special order only. Use NSA1 198 for small quantity requirements. 



51 



0) 

■c 

8 
I 



Standard Digit Positions (continued) 



NSA1198 







DIGIT 1 DIGIT 2 DIGIT 3 DIGIT 4 DIGIT 5 DIGIT 6 DIGIT 7 DIGIT 8 DIGIT 9 




^<d$®<fr®®®®@®®®®®®®® 



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 



Connections Table 



PIN CONNECTIONS 


NSA1188 


NSA1198 


ANODE OR CATHODE 


1 


NC 


NC 


No Connection 


2 


NC 


Digit 1 


Cathode 


3 


Segment C 


Segment C 


Anode 


4 


Digit 1 


Digit 2 


Cathode 


5 


D.P. 


D.P. 


Anode 


6 


Digit 2 


Digit 3 


Cathode 


7 


Segment A 


Segment A 


Anode 


8 


Digit 3 


Digit 4 


Cathode 


9 


Segment E 


Segment E 


Anode 


10 


Digit 4 


Digit 5 


Cathode 


11 


Segment D 


Segment D 


Anode 


12 


Digit 5 


Digit 6 


Cathode 


13 


Segment G 


Segment G 


Anode 


14 


Digit 6 


Digit 7 


Cathode 


15 


Segment B 


Segment B 


Anode 


16 


Digit 7 


Digit 8 


Cathode 


17 


Segment F 


Segment F 


Anode 


18 


iDigit 8 


Digit 9 


Cathode 



52 



Physical Dimensions inches (millimeters) (Typical for all NSA1 100 Series Displays) 



M7 

(1.71) 



«a-y 



(PAD, II 
PLACES) 



(50.20) 




0.04 

(1.02)- 
TYP 



9 II 11 12 13 14 IS II 17 II 
1.10 1.70 

-17 SPACES »- 



(2J4) (43.11) 
2.00 



■cr 



I JO f 

(12.7) I 



IJ4 

(1J2) 



(1.S2) 
111 

(SJ4) 



8 
IP 

3. 
<D 
CO 



1 



Segment Designation 



TIT 



Not* 1 : Material : PC-75 circuit board or approved equivalent. 
Note 2: Nine digits on 0.200/(5.08) centers. 
Note 3: All tolerances ±0.015 (0.38). 

Order Number NSA1188 (for 8 Digits) or NSA1198 (for 9 Digits) 
Special Numbers are Assigned for Custom Units NSA1XXX 



o 

•Li. 



53 



gjjj National 



Semiconductor 




NSA1298A 0.110 Inch (2.794 mm) 
9-Digit LED Numeric Array 



general description 

The NSA1298A is a monolithic, nine digit common 
cathode GaAsP LED numeric array with an apparent 
0.110 inch character height. Each digit comprises 7-seg- 
ments with a right hand decimal point. Eight inputs are 
provided for selection of the appropriate segments and 
decimal (anodes) and nine inputs for digit (cathodes) 
selection. The anodes are internally interconnected for 
multiplexing. Simple interface circuits may be used for 
TTL, DTL, or MOS operation. 



The clear lens of the display package provides excellent 
light transmission and ease of visibility over a wide angle. 
The package is also designed to be readily incorporated 
into the system. PC board type terminals allow easy con- 
nection by wire or pin soldering or with cardedge con- 
nector. The thin package allows significant size reduc- 
tion for high density electronic equipment. 



applications 

■ Hand held calculators 

■ Desk calculators 

■ Digital instruments 

■ Industrial controls 

■ Data terminals 

■ Instrumentation 

■ Electronic test and measurement equipment 



absolute ratings 

Average Current per Segment 
Peak Current per Segment 
Reverse Voltage 
Digit Current Pulse Width 
Operating and Storage 

Temperatures 
Relative Humidity at +35°C 
Terminal Temperature 

(Soldering; 5 seconds) 



0.3 mA min, 7.0 mA max 

3.0 mA min, 70 mA max 

3.0V max 

1.0 ms max 

-20°C to +70°C 
98% 

230°C max 



electrical and Optical Characteristics T A = +25°C Room Temperature 



PARAMETER 



Segment Light Intensity (Peak) 
Digit Light Intensity (Peak) 
Segment Forward Voltage 
Reverse Voltage 
Intensity Matching 
Peak Wavelength 
Spectral Width, Half- Intensity 
Viewing Angle, Off Axis, Horizontal 
Viewing Angle, Off Axis, Vertical 



CONDITIONS 



3.0 mA/Segm. Peak 
3.0 mA/Segm. Peak 
5.0 mA/Segm. dc 
100/WSegm. 



MIN 



0.10 
0.80 



3.0 



TYP 



0.23 
1.84 
1.65 
8.0 
+33 
660 
40 
21 
22 



MAX 



2.0 



UNITS 



mcd 

mcd 

V 

V 

% 

nm 

nm 

degrees 

degrees 



54 



custom options NSA12XX 

■ Number of digits, 6—9 

■ Number of decimal points, maximum of 9 

■ Minus signs can be substituted in place of any digit 
Address line will be Segment G 

■ A decimal point can be substituted for any digit and 
placed in any segment position. (Will be electrically 
connected to that segment address line) 

■ For all other variations it is recommended the factory 
be contacted 

recommended display 
array processing 

The NS A 1298 A display is constructed on a standard 
printed circuit board substrate and covered with a plastic 
lens. 

The edge connectors tab will stand a temperature of 
230°C for 5 seconds. 



The display lens area must not be elevated in tempera- 
ture above 70°C. To do so will result in permanent 
damage to the display. 



It is recommended that the back of the display be 
masked off with low tac masking tape during flux and 
clean operations, to prevent condensation of flux or 
cleaner on the underside of the lens. 



Only rosin core solder, solid core solder and low temp- 
erature deactivating flux are recommended. Recom- 
mended post solder clean solvents are Freon TF, 
Isopropanol, Methanol or Ethylene. These solvents are 
recommended only at room temperature and short time 
periods. 



The use of other solvents or elevated temperature use of 
the recommended solvents may cause permanent damage 
to the lens or the display. 



§ 



physical dimensions and pin connections inches (millimeters) 

Pin Connections Segment Designation 



Phi NC 

Pin 2 Dipt 1 CnMt 

Pw4 Difit2Cna«b 

PaS SaaMtDPAiMM 

Pint Di*'t3Cain* 

Pa7 SaaMatAAMM 

Pal OwjMCMkaat 

Pia I Smmmi E Amm 



Pi* If DifHSCalMM 

Pall Stfaaat D Amh 

Pa 12 DiaUCa***) 

Pin 13- SaamtGAwM 

Pa 14 Diait7Ca»Mb 

Pais SnaartBAMHH) 

Pal* DiptlCtlMM 

Pa 17 Sajamt F Aimm 

Pall DtfttCUaaai 



■LJ*. 



ALL DIGITS OM 120 INCH CENTER 



»J7 

(1.771) 

O.A-^ 
(1.770)" 
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Order Number NSA1298A 

Special Numbers Are Assigned for Custom 

Units NSA12XX 



55 



HH National 

MM Semiconductor 

NSA1541A 0.140 Inch (3.556 mm) 4-Digit 
LED Numeric Array 




General Description 

The NSA1541A is a 4-digit end-stackable common 
cathode GaAsP LED numeric array with an apparent 
0.140 inch character height. Each digit comprises 
7 segments with a right hand decimal point. Eight 
inputs are provided for selection of the appropriate 
segments and decimal (anodes) and 4 inputs for digit 
(cathodes) selection. The anodes are internally inter- 
connected for multiplexing. Simple interface circuits 
may be used for TTL, DTL, or MOS operation. 

The clear lens of the display package provides excellent 
light transmission and visibility over a wide angle. The 
package is also designed to be readily incorporated 
into the system. PC board type terminals allow easy 
connection by wire or pin soldering or with a card- 
edge connector. The thin package allows significant 
size reduction for high density electronic equipment. 

Features 

■ Low drive current 

■ Direct drive from MOS 

■ Wide viewing angle 



Applications 

■ Digital instruments 

■ Industrial controls 

■ Data terminals 

■ Instrumentation 

■ Electronic test and measurement equipment 

Absolute Ratings 

Average Current 0.25 mA min, 7.0 mA max 

per Segment 



Peak Current per Segment 

Reverse Voltage 

Digit Current Pulse Width 

Operating and Storage Temperature 

Relative Humidity at 35°C 

Terminal Temperature 
(Soldering, 5 seconds) 



2.5 mA min, 70 mA max 

3.0V max 

1 ms max 

-20° C to +70° C 

98% max 

230° C max 



Electrical and Optical Characteristics t a = 25°c Room Temperature 



PARAMETER 



CONDITIONS 



MIN 



TYP 



MAX 



UNITS 



Segment Light Intensity (Peak) 
Segment Forward Voltage 
Reverse Voltage 
Intensity Matching 
Peak Wavelength 
Special Width, Half-Intensity 
Viewing Angle, Off Axis, Horizontal 
Viewing Angle, Off Axis, Vertical 



5 mA/Segment Peak 
5 mA/Segment DC 
100ji A/Segment 



0.15 



3.0 



0.40 
1.65 
8.0 
±33 
660 
40 
25 
32 



2.0 



mcd 

V 

V 

% 

nm 

nm 

Degrees 

Degrees 



Typical Performance Characteristics (25°o 



Light Intensity vs Ambient 
Temperature 



Forward Current vs Forward 
Voltage 



Average Light Intensity vs 
Average Forward Current 















< 
s 

z 

Z 
a 

a. 

C 
3 ' 

o 

e 
« 
X 
cc 
o 


/O 
60 
SO 
40 
30 
20 
10 



1 1 1 1 
ALL SEGMENTS AND DP 


r 




"PULSED 0.7 IMPULSE , 
WIDTH 10% DUTY / 


















CY 


LLfc 






/ 


























/ 












i 


' 
























/ 


























/ 









so 

TEMPERATURE ( C) 



FORWARD VOLTAGE (V) 





















































































































































fAII 


SFfi 


MFN1 


SAN 


OOP 


phi 


SFD 




0.7 
CYC 


mPU 
LE 


LSEI 


vidt 


Him 


IDl'l 


rY 



01 2 3 4 5 6 7 1 

AVG FORWARD CURRENT PER SEGMENT (mA) 



56 



Recommended Display 
Array Processing 

The NSA1541A array is constructed on a standard 
printed circuit board substrate and covered with a 
plastic lens. 

The edge connector's tab will stand a temperature of 
230 Q C for 5 seconds. 

The display lens area must not be elevated in 
temperature above 70°C. To do so will result in 
permanent damage to the display. 

It is recommended that the back of the display be 
masked off with low tac masking tape during flux and 
clean operations, to prevent condensation of flux or 
cleaner on the underside of the lens. 



It is also recommended that only localized cleaning 
with a cotton swab on external surfaces be performed 
after soldering. 

Only rosin core solder, solid core solder and low 
temperature deactivating flux are recommended. Recom- 
mended post solder cleaning solvents are Freon TF, 
Isopropanol, Methanol or Ethanol. These solvents 
are recommended only at room temperature and for 
short time periods. 

The use of other solvents or elevated temperature use 
of the recommended solvents may cause permanent 
damage to the lens or the display. 

There are a number of edge connectors which can also 
be used with this display. 



Physical Dimensions and Pin Connections inches (millimeters) 




PIN 


CONNECTION 


1 
2 
3 


No Connection 
Segment c Anode 
No Connection 


4 
5 
6 


Segment DP Anode 
No Connection 
Segment a Anode 


7 
8 
9 


Digit 1 Cathode 
Segment e Anode 
Digit 2 Cathode 


10 
11 
12 


Segment d Anode 
Digit 3 Cathode 
Segment g Anode 


13 
14 
15 


Digit 4 Cathode 
Segment b Anode 
No Connection 


16 
17 


Segment f Anode 
No Connection 



Not* 1 : Material PC-7S circuit board or approved equivalent. 
Not* 2: 4 digits on 0.260/(6.604) centers. 



Order Number NSA1541A 



Segment Designation 

o 

5° Segment Angle 



57 



f%A National 

KM Semiconductor 



^^S^^Sitff**^. ^~*iLmjfmr^i>m( 



NSA1588A 0.140 Inch (3556 mm) 8-Digit 
LED Numeric Array 



eeWstcmcvsms 



General Description 



The NSA1588A is an 8-digit, end stackable, common 
cathode GaAsP LED numeric array with an apparent 
0.140 inch character height. Each digit comprises 
7 segments with a right hand decimal point. Eight 
inputs are provided for selection of the appropriate 
segments and decimal (anodes) and 8 inputs for digit 
(cathodes) selection. The anodes are internally inter- 
connected for multiplexing. Simple interface circuits 
may be used for TTL, DTL or MOS operation. 

The clear lens of the array package provides excellent 
light transmission and visibility over a wide angle. The 
package is also designed to be readily incorporated 
into the system. PC board type terminals allow easy 
connection by wire or pin soldering or with a card- 
edge connector. The thin package allows significant 
size reduction for high density electronic equipment. 

Features 

■ Low drive current 

■ Direct drive from MOS 

■ Wide viewing angle 



Applications 

■ Digital instruments 

■ Industrial controls 

■ Data terminals 

■ Instrumentation 

■ Electronic test and measurement equipment 

Absolute Ratings 

Average Current 0.25 mA min, 7.0 mA max 

per Segment 



Peak Current per Segment 

Reverse Voltage 

Digit Current Pulse Width 

Operating and Storage Temperature 

Relative Humidity at 35°C 

Terminal Temperature 
(Soldering, 5 seconds) 



2.5 mA min, 70 mA max 

3.0V max 

1 ms max 

-20°C to +70°C 

98% max 

230°C max 



Electrical and Optical Characteristics t a = 25°c Room Temperature 



PARAMETER 



CONDITIONS 



MIN 



TYP 



MAX 



UNITS 



Segment Light Intensity (Peak) 
Segment Forward Voltage 
Reverse Voltage 
Intensity Matching 
Peak Wavelength 
Special Width, Half-Intensity 
Viewing Angle, Off Axis, Horizontal 
Viewing Angle, Off Axis, Vertical 



5 mA/Segment Peak 
5 mA/Segment DC 
100/iA/Segment 



0.15 



3.0 



0.40 
1.65 
8.0 
±33 
660 
40 
25 
32 



2.0 



mcd 

V 

V 

% 

nm 

nm 

Degrees 

Degrees 



Typical Performance Characteristics (25°o 

Light Intensity vs Ambient Forward Current vs Forward 

Temperature Voltage 



Average Light Intensity vs 
Average Forward Current 



2S0 
3 200 















< 70 
£ 60 

s 
S so 

tc 

£ 40 

| 30 

oc 

3 20 

o 
oc 
| 10 

oc 

£ o 


I I I I 

ALL SEGMENTS AND DP 


f 




PULSED 0.7 to PULSE ; 
WIDTH 10% DUTY / 


















CY 


CLfc 






/ 


























/ 


























f 












/ 


























/ 









TEMPERATURE ( C) 



FORWARD VOLTAGE (V) 





















J 0.20 

> 


































I 016 


































z 

a 0.12 


































< 

£ 0.08 


































< 

£ 0.04 

oc 




rAII 


SFR 


MFN1 


SAN 


nop 


PHI 


?FD 




0.7 
CYC 


nsPU 
LE 


LSEV 


WIOT 


Him 


(DU1 


rv 



01 2345678 
AVG F0RWAR0 CURRENT PER SEGMENT (mA) 



58 



Custom Options NSA15XX Series 

■ Number of digits, 6—8 

■ Number of decimal points, maximum of 8 

■ Minus signs can be substituted in place of any digit. 
Address line will be segment g 

■ A decimal point can be substituted for any digit and 
placed in any segment position (will be electrically 
connected to that segment address line) 

■ For all variations from the standard products it is 
recommended the factory be contacted 

Recommended Numeric 
Array Processing 

The NSA1588A array is constructed on a standard 
printed circuit board substrate and covered with a 
plastic lens. 

The edge connector's tab will stand a temperature of 
230° C for 5 seconds. 

The display lens area must not be elevated in 
temperature above 70°C. To do so will result in 
permanent damage to the display. 



It is recommended that the back of the display be 
masked off with low tac masking tape during flux and 
clean operations, to prevent condensation of flux or 
cleaner on the underside of the lens. 



It is also recommended that only localized cleaning 
with a cotton swab on external surfaces be performed 
after soldering. 

Only rosin core solder, solid core solder and low 
temperature deactivating flux are recommended. Recom- 
mended post solder cleaning solvents are Freon TF, 
Isopropanol, Methanol or Ethanol. These solvents 
are recommended only at room temperature and for 
short time periods. 

The use of other solvents or elevated temperature use 
of the recommended solvents may cause permanent 
damage to the lens or the display. 

There are a number of edge connectors which can also 
be used with this display. 



Physical Dimensions and Pin Connections inches (millimeters) 




PIN 


CONNECTION 


1 


No Connection 


2 


Segment c Anode 


3 


Digit 1 Cathode 


4 


Segment DP Anode 


5 


Digit 2 Cathode 


6 


Segment a Anode 


7 


Digit 3 Cathode 


8 


Segment e Anode 


9 


Digit 4 Cathode 


10 


Segment d Anode 


11 


Digit 5 Cathode 


12 


Segment g Anode 


13 


Digit 6 Cathode 


14 


Segment b Anode 


15 


Digit 7 Cathode 


16 


Segment f Anode 


17 


Digit 8 Cathode 



Note 1 : Material PC-75 circuit board or approved equivalent. 
Note 2: 8 digits on 0.260/(6.604) centers. 



Order Number NSA1588A 



Segment Designation 

111 
II 

■■■M DP 

5° Segment Angle 



59 



t£l National 

Jul Semiconductor 

NSA5140A 0.110 Inch (2.79 mm) 14-Digit 
LED Numeric Array 



l#%~^""«> |>81^»,.*«« 



General Description 



Applications 



The NSA5140A is a fourteen monolithic digit common 
cathode GaAsP, LED numeric array with an apparent 
0.110 inch (2.79mm) character height. Each digit 
comprises seven segments with a right hand decimal 
point. Eight inputs are provided for selection of the 
appropriate segments and decimal (anodes) and four- 
teen inputs for digit (cathodes) selection. The anodes 
are internally interconnected for multiplexing. Simple 
interface circuits may be used for TTL, DTL, or MOS 
operation. 

The clear lens of the display package provides excellent 
light transmission and ease of visibility over a wide 
angle. The package is also designed to be readily incor- 
porated into the system. PC board type terminals allow 
easy connection by wire or pin soldering or with a card- 
edge connector. The thin package allows significant size 
reduction for high density electronic equipment. 

The excellent aspect ratio of the digit [0.110 x 0.070/ 
(2.79 x 1.78)] affords added versatility for the designer 
to further magnify the display digit height. 



Hand held calculators 

Desk calculators 

Digital instruments 

Industrial controls 

Data terminals 

Instrumentation 

Electronic test and measurement equipment 



Absolute Ratings 

Average Current per Segment 
Peak Current per Segment 
Reverse Voltage 
Digit Current Pulse Width 
Operating and Storage 

Temperatures 
Relative Humidity at +35°C 
Terminal Temperature 

(Soldering, 5 seconds) 



0.5 mA min, 20 mA max 

7.0 mA min, 70 mA max 

3.0V max 

1 .0 ms max 

-20° C to +70°C 
98% max 



230 C max 



Electrical and Optical Characteristics t a = +25°c Room Temperature 



PARAMETER 



CONDITIONS 



MIN 



TYP 



MAX 



UNITS 



Segment Light Intensity (Peak) 
Segment Forward Voltage 
Reverse Voltage 
Intensity Matching 
Peak Wavelength 
Spectral Width, Half-Intensity 
Viewing Angle, Off Axis, Horiz. 
Viewing Angle, Off Axis, Vert. 



7.0 mA/Segm. Peak. 
7.0 mA/Segm. DC 
100piA/Segm. 



0.15 



3.0 



0.45 
1.8 
8.0 
±33 
660 
40 
25 
34 



2.0 



mcd 

V 

V 

% 

nm 

nm 

degrees 

degrees 



Typical Performance Characteristics (25°o 



Light Intensity vs 
Ambient Temperature 



Forward Current vs 
Forward Voltage 



250 
5 200 



TEMPERATURE <°C) 



Average Light Intensity vs 
Average Forward Current 















1 7D 

£ 60 

z 

S 50 

CO 

cc 

£ 40 

»- 

| 3. 

K 

u 20 

a 

oc 

1 ,0 

S o 


"I 1 1 1 

ALL SEGMENTS AND DP 


! 




PULSED 0.7 ms PULSE ; 
WIDTH 8.25% 0UTY / 


















CV 


ULt 






/ 


























/ 
























J 


f 












/ 


























/ 









1.0 1.5 2.0 

FORWARD VOLTAGE (V) 





















































































































































All 


SFR 


MFM1 


re AN 


nnp 








0.7 mj PULSE WIDTH 0.26% DUTY 




CYC 


LE 













3 0.25 

i- 

z 0.20 

i- 

> 

£ 0.10 

=J 0.05 



1.0 2.0 3.0 4.0 5.0 0.0 7.0 CO 
AVG. FORWARD CURRENT PER SE6MENT (mA) 



60 



Custom Options NSA51XX 

Custom options are available as follows: 

■ Number of digits, 9 through 14. 

■ Number of decimal points. Maximum of 14. 

■ Minus signs can be substituted in place of any digit. 
Address line will be Segment G. 

■ A decimal point can be substituted for any digit and 
placed in any segment position. (Will be electrically 
connected to that segment address line.) 

■ For all other variations it is recommended the factory 
be contacted. 



Recommended Display 
Array Processing 

The NSA5140A display is constructed on a standard 
printed circuit board substrate and covered with a 
plastic lens. 

The edge connectors tab will stand a temperature of 
230°C for 5 seconds. 

The display lens area must not be elevated in temperature 
above 70° C. To do so will result in permanent damage to 
the display. 

It is recommended that the back of the display be 
masked off with low tac masking tape during flux and 
clean operations, to prevent condensation of flux or 
cleaner on the underside of the lens. 

It is also recommended that only localized cleaning 
with a cotton swab on external surfaces be performed 
after soldering. 



Only rosin core solder, solid core solder and low 
temperature deactivating fluxs are recommended. Recom- 
mended post solder clean solvents are Freon TF, 
Isopropanol, Methanol or Ethanol. These solvents are 
recommended only at room temperature and short 
time periods. 

The use of other solvents or elevated temperature use 
of the recommended solvents may cause permanent 
damage to the lens or the display. 



Typical Drive Circuit 



n 



DSSM7SE6MENT 

DRIVER WITH INTERNAL 

CURRENT CONTROL 



UiUlU 



ASCDEFGOP 
NSAS14IA 14 DIGIT DISPLAY 



1 2 3 4 5 « 7 



I I 10 11 12 13 14 



ttttttt 



ttftttt 



Physical Dimensions and Pin Connections inches (millimeters) 



Pin Connections 







MM 
II.IB- 




r^fTvp 




tut 
am 
























_ 




1. 


n 1 




iSTaY^TlCTroT^TaToTaT' 


mmm\ 


(»» 


•jj 

tun 

i 


1 






J 






ftftftftftft^ 








m ft ft ft ft ft ft ft ft ft ft ft ft ft ft 


k / 


i i i 4 t • 7 i i it it a u u it it ij n it » n h " v - 
na-irar "* ■ "' 1 


TW" A " M ' 


|. lltMM»» 0|4) ^^ | 
Ul 


arum 


(!!.« 








PIN 1 

PIN 2 
PIN 3 
PIN 4 
PINS 
PIN I 
PINT 
PINS 
PINS 
PIN IB 
PIN 11 
PIN 12 
PIN 13 
PIN 14 
PIN IS 
PIN IS 
PIN 17 
PIN IS 
PIN IS 
PIN 21 
PIN 21 
PIN 22 



DIGIT 1 CATHODE 
DIGIT 2 CATHODE 
DIGIT 3 CATHODE 
DIGIT 4 CATHODE 
SEGMENT C ANODE 
DIGIT SCATH00E 
SEGMENT DP ANODE 
DIGITS CATHODE 
SEGMENT A ANODE 
DIGIT 7 CATHODE 
SEGMENT E ANODE 
DIGIT SCATH00E 
SEGMENT ANODE 
DIGIT S CATHODE 
SEGMENT G ANODE 
DIGIT IS CATHODE 
SEGMENTS ANODE 
DIGIT 11 CATHODE 
SEGMENT F ANODE 
DIGIT 12 CATHODE 
DIGIT 13 CATHODE 
DIGIT 14 CATHODE 



Segment Designation 



Note 1: Material: PC-75 circuit board or approved equivalent, 

Note 2: All dimensions in inches and (millimeters). 

Note 3: Fourteen digits on 0.1 50/(3.81 ) centers. 

Note 4: All tolerances ±0.015 (0.38). 



Order Number NSA5140A for 14-Digit Unit 
Special Numbers are Assigned for Custom Units NSA51 XX 



■LJ< 



All digits on 0.15 (3.81 ) centers 



61 



VWA National 

ma Semiconductor 

NSA7120 0.110 Inch (2.794 mm) 12-Digit LED Numeric Array 



General Description 



Applications 



The NSA7120 is a 12 monolithic digit common cathode 
GaAsP , LED numeric array with an apparent 0.1 10 inch 
(2.79 mm) character height. Each digit comprises 7 
segments with a right hand decimal point. Eight inputs 
are provided for selection of the appropriate segments 
and decimal (anodes) and 12 inputs for digit (cathodes) 
selection. The anodes are internally interconnected 
for multiplexing. Simple interface circuits may be 
used for TTL, DTL, or MOS operation. 

The clear lens of the array package provides excellent 
light transmission and ease of visibility over a wide 
angle. The package is also designed to be readily incor- 
porated into the system. PC board type terminals allow 
easy connection by wire or pin soldering or with a 
card-edge connector. The thin package allows significant 
size reduction for high density electronic equipment. 

The excellent aspect ratio of the digit [0.110 x 0.070/ 
(2.79 x 1.78)] affords added versatility for the designer 
to further magnify the display digit height. 



Hand-held calculators 

Desk calculators 

Digital instruments 

Industrial controls 

Data terminals 

Instrumentation 

Electronic test and measurement equipment 



Absolute Ratings 

Average Current per Segment 

Peak Current per Segment 

Reverse Voltage 
Digit Current Pulse Width 
Operating and Storage Temperatures 
Relative Humidity at 35°C 
Terminal Temperature (Soldering, 
5 seconds) 



0.25 mA min, 

6 mA max 

3 mA min, 

70 mA max 

3.0V max 

1.0 ms max 

-20°C to +70°C 

98% max 

230° C max 



Electrical and Optical Characteristics t a = 25°c Room Temperature 



PARAMETER 



CONDITIONS 



MIN 



TYP 



MAX 



UNITS 



Segment Light Intensity (Peak) 

Segment Forward Voltage 

Reverse Voltage 

Intensity Matching 

Peak Wavelength 

Spectral Width, Half-Intensity 

Viewing Angle, Off Axis, Horizontal 

Viewing Angle, Off Axis, Vertical 



5.0 mA/Segment Peak 
1/12 Duty Cycle 

5.0 mA/Segment DC 

1 00 ii A/Segment 



0.10 



3.0 



0.35 

1.8 
8.0 
±33 
660 
40 
20 
20 



2.0 



mcd 

V 

V 

% 

nm 

nm 

Degrees 

Degrees 



Typical Performance Characteristics <25°o 



Light Intensity vs Ambient 
Temperature 



Forward Current vs Forward 
Voltage 



200 
ISO 
100 
SO 































































£ 40 
| » 
3 20 



- 1 1 1 1 

ALL SEGMENTS AND DP 


f 




PULSED 0.7 ins PULSE 1 
WIDTH 8.33% DUTY / 






CY 


HLfc 






/ 














/ 












! 


1 


























J 









so 

TEMPERATURE (°C) 



Average Light Intensity 

vs Average Forward Current 



FORWARD VOLTAGE (V) 



012345678 
AVG. FORWARD CURRENT PER SEGMENT (mA) 























































































































































'. AL 


L SEGMENTS AND DP 
LSED 0.7 ms PULSE 
TH 8 33S DUTY CYCLE 














L_ 











62 



Custom Options NSA71XX Series 

Custom options are available as follows: 

■ Number of digits, 9-12 

■ Number of decimal points, maximum of 12 

■ Minus signs can be substituted in place of any digit. 
Address line will be segment G 

■ A decimal point can be substituted for any digit and 
placed in any segment position. (Will be electrically 
connected to that segment address line) 

■ For all other variations it is recommended the factory 
be contacted 

Recommended Display 
Array Processing 

The NSA7120 array is constructed on a standard 
printed circuit board substrate and covered with a 
plastic lens. 

The edge connectors tab will stand a temperature of 
230°C for 5 seconds. 

The display lens area must not be elevated in tempera- 
ture above 70°C. To do so will result in permanent 
damage to the display. 

It is recommended that the back of the display be 
masked off with low tac masking tape during flux and 
clean operations, to prevent condensation of flux or 
cleaner on the underside of the lens. 

It is also recommended that only localized cleaning 
with a cotton swab on external surfaces be performed 
after soldering. 



Only rosin core solder, solid core solder and low 
temperature deactivating fluxes are recommended. 
Recommended post solder cleaning solvents are Freon 
TF, Isopropanol, Methanol or Ethanol. These solvents 
are recommended only at room temperature and for 
short time periods. 

The use of other solvents or elevated temperature use 
of the recommended solvents may cause permanent 
damage to the lens or the display. 

Typical Drive Circuit 



DSI867 SEGMENT 

DRIVER WITH INTERNAL 

CURRENT CONTROL 



mmn 



ABCOEFGDP 
NSA7120 DIGIT DISPLAY 
1234567 « 9 10 1 1 12 



ttttttt tttTT 



,JJ 



Physical Dimensions and Pin Connections inches (millimeters) 



r 




5f 



v>» v>> **s s. 



Note 1 : Material : PC-75 circuit board or approved equivalent. 
Note 2: 12 digits on 0.175/(4.445) centers. 
Note 3: All tolerance ±0.015 (0.381). 



Segment Designation 



Order Number NSA7120 for 12-Digit Unit 
Special Numbers are Assigned for Custom Units NSA71XX 



•LJ< 



PIN NO. 


ELECTRICAL 
CONNECTION 


1 
2 
3 


Digit 1 Cathode 
Digit 2 Cathode 
Digit 3 Cathode 


4 
5 
6 


Segment C Anode 
Digit 4 Cathode 
Segment DP Anode 


7 
8 
9 


Digit 5 Cathode 
Segment A Anode 
Digit 6 Cathode 


10 
11 
12 


Segment E Anode 
Digit 7 Cathode 
Segment D Anode 


13 
14 
15 


Digit 8 Cathode 
Segment G Anode 
Digit 9 Cathode 


16 
17 
18 


Segment 8 Anode 
Digit 10 Cathode 
Segment F Anode 


19 
20 


Digit 1 1 Cathode 
Digit 12 Cathode 



63 




Multidigit LED Numeric Displays 



Introduction 

National Semiconductor offers a wide range of red 
multidigit GaAsP LED reflective displays, repre- 
senting the latest design advances in 0.3", 0.5" and 
0.7" formats. The series provides the designer with an 
effective, easy to implement answer to the need for 
an inexpensive large numeric display. 



Applications 



Industrial controls 
Data terminals 
Test equipment 
Point of sale 
Mini-computer readout 
Home consumer application 



Features 

■ The end stackability of the 2-digit and 4-digit 
displays allows for a wide range of options for ap- 
plications requiring additional digita 

■ Prematched light intensity of digits within each 
display is guaranteed to insure uniform brightness. 

■ PCB mounting decreases overall cost per digit and 
allows for easier board mounting. 

■ The optical design of this series affords an easy-to- 
read display with a wide viewing angle and ex- 
cellent ON-OFF contrast 



Custom Displays 

The products listed in this data book are standard 
inventory items designed to meet the majority of your 
needs for an inexpensive numeric display. The 
modular construction of these displays offers a great 
deal of flexibility in display format and drive con- 
siderations through modification of the PC board 
design. If you have a volume application not met by 
one of the standard product configurations listed, 
contact the National Sales Office nearest you for an 
LED display custom designed to your needs. 




DIE MOUNTED 
ON PC BOARD 



REFLECTOR 



MYLAR 
DIFFUSER 



LENS 



65 



Multidigit LED Numeric Display Selection Guide 

MULTIPURPOSE DISPLAYS 


Device 
Type 


Digit 
Size 


Format 


Drive 


Light 

Intensity 

(Typ) 


Forward 

Voltage 

(Typ) 


NSN334 
NSN373 
NSN374 
NSN381 
NSN382 


0.3" 


BBuo dp 

BB No DP 

B.B. 
B.B. 


Common Anode — Direct 
Common Cathode— Direct 
Common Anode — Direct 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 


1.6 mcd 


1.7V@10 mA peak 


NSN534 
NSN581 
NSN582 
NSN583 
NSN584 


0.5" 


4B. 

B.B 
B.B 
B.B. 
BB. 


Common Anode— Direct 
Common Cathode— Multiplexed 
Common Anode — Multiplexed 
Common Cathode— Direct 
Common Anode— Direct 


1.6 mcd 


1.7V® 10 mA peak 


NSN734 
NSN781 
NSN782 
NSN783 
NSN784 


0.7" 


+I.B 
B.B 
B.B. 
B.B. 
B.B. 


Common Anode— Direct 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 
Common Cathode— Direct 
Common Anode— Direct 


1.6 mcd 


1.7V® 10 mA peak 


NSB3382 
NSB3881 
NSB3882 


0.3" 


+I.B.B.B. 
B.B.B.B 
B.B.B.B. 


Common Anode— Multiplexed 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 


1.6 mcd 


1.7V® 10 mA peak 


NSB5382 
NSB5388 
NSB5415 
NSB5881 
NSB5882 


0.5" 


+I.B.B.B. 

. +I.B.B.B 

+B.B.B.B 

B.B.B.B. 

B.B.B.B. 


Common Anode— Multiplexed 
Common Cathode— Multiplexed 
Common Cathode— Multiplexed 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 


1.6 mcd 


1.7V® 10 mA peak 


NSB7382 
NSB7881 
NSB7882 


0.7" 


4B.B.B. 
B.B.B.B 
B.B.B.B. 


Common Anode— Multiplexed 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 


1.6 mcd 


1.7V® 10 mA peak 


NSB5917 

NSB5918 
NSB5921 
NSB5922 
NSB5931 


0.5" 


+IB.B.B.B. 

+B.B.B.B. 

B.B.B.B.B. 

B.B.B.B.B. 

B.B.B.B.B.B. 


Common Anode— + 1 Direct, 

4 Digits Multiplexed 
Common Cathode— Multiplexed 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 
Common Cathode — Multiplexed 


1.6 mcd 


1.7V® 10 mA peak 


CLOCK DISPLAYS 


Part# 


Feature/Function 


NSB7400 
NSB7401 
NSB7402 
NSB7403 
NSB7404 
NSB7405 


12-hour format with single piece reflector; with PM indicator; 
with red plastic lens. 

24-hour format with single piece reflector; without PM 
indicator; with red plastic lens. 

12-hour format with single piece reflector; with PM indicator; 
with red mylar tape (no lens). 

12-hour format with single piece reflector; with PM indicator; 
with clear mylar tape (no lens). 

24-hour format with single piece reflector; without PM 
indicator; with red mylar tape (no lens). 

24-hour format with single piece reflector; without PM 
indicator; with clear mylar tape (no lens). 



66 



Multidigit LED Numeric Display Cross Reference 



PC BOARD MOUNTED DISPLAYS 



Part Number 



Litronix 

DL3531 

DL4530 
DL6500 



Description 



0.5" Red 3V2 Digit, Common Anode, Mux 
0.5" Red 4 Digit, Common Anode, Mux 
0.5" Red 6 Digit, Common Cathode, Mux 



NSC Device 



NSB5382 
NSB5882 
NSB5931 



Notes 



B, C, D 
B, C, D 
A 



Texas Instruments 

TIL361 



0.5" Red Dual Digit, Common Cathode, Mux 



Notes: A— Direct replacement 

B— Difference in PC board dimensions 
C— Difference in pinout 
D— Difference in pin location 



NSN581 



B, C, D 



DIGITS IN MOLDED DIPS' 



Part Number 



Hewlett-Packard 

5082-7731 
5082-7740 



Description 



0.3" Red Single Digit, Common Anode 
0.3" Red Single Digit, Common Cathode 



NSC Device 



NSN334, NSN374, NSN382 
NSN373, NSN381 



Monsanto 

MAN71A 
MAN74A 



0.3" Red Single Digit, Common Anode 
0.3" Red Single Digit, Common Cathode 



NSN334, NSN374, NSN382 
NSN373 or NSN381 



Fairchild 

FND500 
FND507 



0.5" Red Single Digit, Common Cathode 
0.5" Red Single Digit, Common Anode 



NSN581 or NSN583 
NSN534, NSN582, NSN584 



Litronix 

DL704 

DL707R 

DL721 

DL727 

DL728 

Texas Instruments 

TIL313 
TIL321 
TIL322 



0.3" Red Single Digit, Common Cathode 
0.3" Red Single Digit, Common Anode 
0.5" Red 1- 1 /2 Digit, Common Anode 
0.5" Red Dual Digit, Common Anode 
0.5" Red Dual Digit, Common Cathode 



0.3" Red Single Digit, Common Cathode 
0.5" Red Single Digit, Common Anode 
0.5" Red Single Digit, Common Cathode 



NSN373 or NSN381 

NSN334, NSN374, NSN382 

NSN534 

NSN582 or NSN584 

NSN581 or NSN583 



NSN373 or NSN381 
NSN534, NSN582, NSN584 
NSN581 or NSN583 



* National's PC board mounted LED displays represent a new concept in display packaging and do not directly replace the older, more ex- 
pensive single digits still being offered by the competition. Competitive single digits must be wired by the user for either multiplex or direct 
drive while the NSC units are "pre-wlred" on the PC board Another variable Is the number of digits per package. The National NSN series is 2 
digits par package and the NSB series is 4, 5 or 6 digits per package. 



67 



CD 



£g| National 

JEM Semiconductor 



NSB5388 3 1/2-Digit 0.5 Inch (12.70 mm) LED Display 



General Description 

The NSB5388 is a 3 1/2-digit, 0.5 inch (12.70 mm) 
high GaAsP LED display. Basically a common cathode 
multiplexed display, the NSB5388 features separate 
access to the ± sign and decimal points and is directly 
compatible with the ADD3500, ADO3501 DVM cir- 
cuit. Electrical connection is by PCB type terminals 
on the edge of the display. 

The optical design of this unit creates a distinct, easy to 
read display with a wide viewing angle, excellent ON/ 
OFF contrast and segment uniformity. The NSB5388 
provides the designer with an effective, easy to imple- 
ment answer to the need for an inexpensive large numeric 
display. 

Recommended Display Processing 

The multidigit series display is constructed on a standard 
printed circuit board substrate and covered with a 
plastic lens. The edge connector tab will stand 230°C 
for 5 seconds. Permanent damage to the display will 
result if 'ens temperature exceeds 70° C. Since the dis- 
play is not hermetic, immersion of the entire package 
during flux and clean operation may cause condensation 
of flux or cleaner on the underside of the lens. Only the 
edge connectors should be immersed. 



Rosin core solder, solid core solder, and low activity 
organic fluxes are recommended. Freon TF, Isopropanol, 
Methanol or Ethanol solvents are recommended only at 
room temperature and for short periods. The use of 
other solvents or elevated temperature use of the recom- 
mended solvents may cause permanent damage to the 
lens or display. 



Applications 



Digital instrumentation 
Power supply readouts 
Multimeters 
Panel meters 



Absolute Ratings 

Average Current per Segment 
Peak Current per Segment 
Reverse Voltage per Segment 
Operating and Storage Temperature 
Relative Humidity at 35° C 
Lead Temperature (Soldering, 
5 seconds) 



20 mA max 

75 mA max 

3.0V max 

-20°C to +70°C 

98% 

230°C 



Electrical and Optical Characteristics t a = 25°c 



PARAMETER 



Segment Light Intensity (Peak) 
Digit and D.P. Light Intensity {Peak) 
Segment Forward Voltage 
Segment Reverse Voltage 
Peak Wavelength 
Spectral Width, Half-Intensity 
Viewing Angle, Off Axis 
Intensity Matching 



CONDITIONS 



lOmA/Seg. Peak 
10mA/Seg. Peak 
10mA/Seg. Peak 
100/LiA/Seg. 



1 m A/Seg. Avg. 



MIN 



TYP 



0.10 


0.20 


0.80 


1.6 




1.7 


3.0 


8.0 




660 




40 




60 




±33 



MAX 



2.0 



UNITS 



mcd 

mcd 

V 

V 

nm 

nm 

degrees 

% 



68 








u 



«« 



«« 



«« 



*< 



j— <■ 



•< 



(0 

c 
o 

(D 
O 

a. 
a 
< 

"<5 
o 

'5. 



p-VW-^ 



(►AVSr^ 




vcc 

ANALOG Vcc 



GND 
DIGIT 1 
DIGIT 2 
DIGIT 3 
DIGIT 4 
'OUT 
<IN 
VREF 
SW1 
SW2 



ANALOG 
GND 



SIGN 

VFLT 

VinW 

V|N( + I 

VFB 



u. " 



-Hh 



-Ht 



JUUUUUUL 



AW 




l II 

in ■ 2 «"> 

1 ° s " 

e S 8> + 

2 « J? = 

u n ig I 

S O. « >; 

•- ° 5 X 

= = o «- 

< < — i cc 



o o o a 



L*-0 o-^AWW/S^ 




70 



Pin Connections 



PIN NO. 


ELECTRICAL 
CONNECTION 


1 


Digit No. 1 Segment G Anode 


2 


Digit No. 1 Segment G Cathode 


3 


Digit No. 1 Segment H Anode* 


4 


Digit No. 1 Segment J Cathode* 


5 


Digit No. 1 Segment DP Anode 


6 


Digit No. 2 Segment DP Anode 


7 


Digit No. 3 Segment DP Anode 


8 


Digit No. 4 Segment DP Anode 


9 


Segment D Anode 


10 


Segment C Anode 


11 


Segment B Anode 


12 


Segment A Anode 


13 


Segment E Anode 


14 


Segment F Anode 


15 


Segment G Anode 


16 


Digit No. 1 Cathode 


17 


Digit No. 2 Cathode 


18 


NC 


19 


Digit No. 3 Cathode 


20 


Digit No. 4 Cathode 



CO 

CJi 



* Segments H and J internally connected in series 



Physical Dimensions inches (millimeters) 



1998 

(S0.5SI 

0.500 1.500 
T01 N0N ACCUM 



125.40) ♦ 



1.1 u 

/ I.U. 



0.100 i I 



IjiHHHHHHHHHHHHHHHHHHHI 




0.100 

s (il»oi 



o.ioo 



700 
(17.711 



0.M0 
(1.010) 
DIAMETER 
HOLE 20 
PLACES 



OJ»0 
"(7.110) 



(1.016) 



Note 1 : Material: super-punch circuit board or approved equivalent 0.062 thick. 
Note 2: All tolerances are 0.015 (0.38). 



71 



5551 National 

4lm Semiconductor 



NSB5415 4 1/2-Digit 0.5 Inch (12.70 mpi) LED Display 



General Description 

The NSB5415 is a 4 1/2-digit, 0.5 inch (12.70 mm) 
high GaAsP LED display. Basically a common cathode 
multiplexed display, the NSB5415 features separate 
access to the + sign and decimal points and is directly 
compatible with the ADB4510, ADB4511 DVM circuit. 
Electrical connection is by PCB type terminals on the 
edge of the display. 

The optical design of this unit creates a distinct, easy to 
read display with a wide viewing angle, excellent ON/ 
OFF contrast and segment uniformity. The NSB5415 
provides the designer with an effective, easy to imple- 
ment answer to the need for an inexpensive large numeric 
display. 

Recommended Display Processing 

The multidigit series display is constructed on a standard 
printed circuit board substrate and covered with a 
plastic lens. The edge connector tab will stand 230°C 
for 5 seconds. Permanent damage to the display will 
result if lens temperature exceeds 70°C. Since the dis- 
play is not hermetic, immersion of the entire package 
during flux and clean operation may cause condensation 
of flux or cleaner on the underside of the lens. Only the 
edge connectors should be immersed. 



Rosin core solder, solid core solder, and low activity 
organic fluxes are recommended. Freon TF, Isopropanol, 
Methanol or Ethanol solvents are recommended only at 
room temperature and for short periods. The use of 
other solvents or elevated temperature use of the recom- 
mended solvents may cause permanent damage to the 
lens or display. 

Applications 

■ Digital instrumentation 
Power supply readouts 
Multimeters 
Panel meters 



Absolute Ratings 

Average Current per Segment 20 mA max 
Peak Current per Segment 

( 100 jusec pulse) 150mA max 

Reverse Voltage per Segment 3.0V max 
Operating and Storage Temperature -20°C to +70°C 

Relative Humidity at 35°C 98% 
Lead Temperature (Soldering, 

5 seconds) 230°C 



Electrical and Optical Characteristics t a 



= 25°C 



PARAMETER 



Segment Light Intensity (Peak) 
Digit and D.P. Light Intensity (Peak) 
Segment Forward Voltage 
Segment Reverse Voltage 
Peak Wavelength 
Spectral Width, Half-Intensity 
Viewing Angle, Off Axis 
Intensity Matching 



CONDITIONS 



lOmA/Seg. Peak 
lOmA/Seg. Peak 
10mA/Seg. Peak 
100/jA/Seg. 



10 mA/Seg. Avg. 



MIN 



TYP 



0.10 


0.20 


0.80 


1.6 




1.7 


3.0 


8.0 




660 




40 




60 




±33 



MAX 



2.0 



UNITS 



mcd 

mcd 

V 

V 

nm 

nm 

degrees 

% 



72 



Typical Applications 






h 
y^ 



i— vw-» 



> a* 

Z -J 



c •" « 



i> E * 



3s 

a. oc 




* 



I u oc 



I m "1 I I g l *-^- »^~ "-^- 




CO 
CD 



Oi 



73 



CD 
CO 



Pin Connections 



PIN NO. 


ELECTRICAL 
CONNECTION 


1 


Anode G 


2 


Anode F (Digit 1 Only, H) 


3 


Anode E (Digit 1 Only, J) 


4 


Anode D 


5 


Anode A 


6 


Anode C 


7 


Anode B 


8 


NC 


9 


Anode DP 


10 


NC 


11 


NC 


12 


Cathode 1 


13 


Cathode 2 


14 


Cathode 4 


15 


Cathode 5 


16 


Cathode 3 



Physical Dimensions inches (millimeters) 



0.306 i , , 

DEC«uiroi»T iriM) 4 ' L *" s i " !" nir 

j 4 HUMS I i J 

tfgagflffji 

12 3 • 5 

I | (13.0 

ion / i j j « s i i • 5 it ii H u u 15 « \ T 

_^__ 0IA „ AD — / 1 III X 

MKMES I—'jM— I S.6riM B 4|- \« 



0.700 
119.301 



0.S14 
(13.0S) 



PACES Mnj|-iSi«- 

TOl HON ACCUM 



(2.540) (31.10) 
TOL NON-ACCUM 



0150 
(3.110) 



. 0.030 
(0.110) 



j 0.031 
j (0.707)" 

I !», 



L' 



0.062 

(1.5741 



Note 1: Material: G-10 circuit board natural or approved equivalent, unless otherwise specified. 
Note 2: 5 digits on 0.600 (15.24) centers, unless otherwise specified. 
Note 3: Tolerances: ±0.015 (0.38), unless otherwise specified. 



74 



531 National 

£A Semiconductor 



NSB5917, NSB5921, NSB5922 0.5 Inch (12.70 mm) 
5 Digit Numeric Displays 



General Description 



Absolute Ratings 



The 5900 series of GaAsP LED reflective displays from 
National Semiconductor represent the latest in design 
advances to provide you with an effective, easy to 
implement answer to the need for an inexpensive large 
numeric display. 

Versatility is offered with both common anode 
(NSB5922) and common cathode (NSB5921) multi- 
plexed versions for 5 full digits and an option of direct 
drive overflow/polarity indication with 4 digits in a 
common anode multiplexed format (NSB5917K Elec- 
trical connection is by PCB type terminals on the edges 
of the display. 

The optical design of this display series creates a dis- 
tinct, easy to read display with wide viewing angle, 
excellent "ON-OFF" contrast, and segment uniformity. 



Applications 



Test and measurement equipment 
Consumer products 
Industrial controls 
Desk top calculators 
Digital instruments 



Average Current Per Segment 20 mA max 

Peak Current Per Segment 75 mA max 

Reverse Voltage Per Segment 3V min 
Operating and Storage 

Temperature -20°C to +70°C 

Relative Humidity at 35°C 98% 

Terminal Temperature (Soldering, 5 seconds) 230°C 

Recommended Display Processing 

The multi-digit series display is constructed on a 
standard printed circuit board substrate and covered 
with a plastic lens. The edge connector tab will stand a 
temperature of 230°C for 5 seconds. The display lens 
area must not be elevated in temperature above 70°C. 
To do so will result in permanent damage to the display. 
Since the display is not hermetic, immersion of the 
entire package during flux and clean operations may 
cause condensation of flux or cleaner on the underside 
of the lens. It is recommended that only the edge con- 
nectors be immersed. Only rosin core solder, solid core 
solder, and low activity organic fluxes are recommended. 
Cleaning solvents are Freon TF, Isopropanol, Methanol, 
or Ethanol. These solvents are recommended only at 
room temperature and for short time periods. The use of 
other solvents or elevated temperature use of the 
recommended solvents may cause permanent damage to 
the lens or display. 



Electrical and Optical Characteristics (25*0 



PARAMETER 



CONDITIONS 



MIN 



TYP 



MAX 



UNITS 



Segment Light Intensity (Peak) 
Digit and D.P. Light Intensity (Peak) 
Segment Forward Voltage 
Segment Reverse Voltage 
Peak Wavelength 
Spectral Width, Half-Intensity 
Viewing Angle, Off Axis 
Intensity Matching 



10 m A/Segment Average 
10 m A/Segment Average 
10 m A/Segment Peak 
1 00 ju A/Segment 



10 m A/Segment Average 



0.10 


0.20 


0.80 


1.6 




1.7 


3.0 


8.0 




660 




40 




60 




±33 



2.0 



mcd 

mcd 

V 

V 

nm 

nm 

degrees 

% 



75 



s 

m 



OQ 
CO 



8 
CD 
(0 



Pin Connections 



NSB5817 



NSB5921 



NSB5922 





ELECTRICAL 


PIN NO. 


CONNECTION 


1 


Digit 1 Anode H 


2 


Digit 1 Cathode H 


3 


Digit 1 Anode J 


4 


Digit 1 Cathode J 


5 


Digit 1 Cathode G 


6 


Digit 1 Anode G 


7 


Digit 1 Anode D.P. 


8 


Digit 1 Cathode D.P. 


9 


Digit 1 Cathode C 


10 


Digit 1 Anode C 


11 


Digit 1 Cathode B 


12 


Digit 1 Anode B 


13 


Digit 2 Anode 


14 


Digit 3 Anode 


15 


Cathode G 


16 


Cathode F 


17 


Cathode E 


18 


Cathode D 


19 


Digit 4 Anode 


20 


Digit 5 Anode 


21 


Cathode D.P. 


22 


Cathode C 


23 


Cathode B 


24 


Cathode A 





ELECTRICAL 


PIN NO. 


CONNECTION 


1 


Anode G 


2 


Anode F 


3 


Anode E 


4 


Anode D 


5 


Anode A 


6 


Anode C 


7 


Anode B 


8 


NC 


9 


Anode D.P. 


10 


Light Sensor 


11 


Light Sensor 


12 


Cathode 1 


13 


Cathode 2 


14 


Cathode 4 


15 


Cathode 5 


16 


Cathode 3 



PIN NO. 


ELECTRICAL 
CONNECTION 


1 


Cathode G 


2 


Cathode F 


3 


Cathode E 


4 


Cathode D 


5 


Cathode A 


6 


Cathode C 


7 


Cathode B 


8 


NC 


9 


Cathode D.P. 


10 


Light Sensor 


11 


Light Sensor 


12 


Anode 1 


13 


Anode 2 


14 


Anode 4 


15 


Anode 5 


16 


Anode 3 



Physical Dimensions and Display Capability Outline inches (millimeters) 



m H H B. Eh 




^^-lu5 , *' lAct, 



Tot. — **um 



m.HM-ACCIW 



NSB5917 



TOL nod ACCUM 



^-L L j- n i 

l _q t B. q? HB 




NSB5021, NSB5822 



76 




National 
Semiconductor 



CO 
CD 



NSB5918 3 3/4-Digit 0.5 Inch (12.70 mm) LED Display 



General Description 

The NSB5918 is a 3 3/4-digit, 0.5 inch (12.70 mm) 
high GaAsP LED display. Basically a common cathode 
multiplexed display, the NSB5918 features separate 
access to the ± sign and decimal points and is directly 
compatible with the ADD3701 DVM circuit. Electrical 
connection is by PCB type terminals on the edge of the 
display. The 3 3/4-digit is distinguished from the 3 1/2 
and 4 1/2-digit designs by the fact that the overflow 
sign is followed by 4 full 7 -segment digits. 

The optical design of this unit creates a distinct, easy to 
read display with a wide viewing angle, excellent ON/ 
OFF contrast and segment uniformity. The NSB5918 
provides the designer with an effective, easy to imple- 
ment answer to the need for an inexpensive large numeric 
display. 

Recommended Display Processing 

The multidigit series display is constructed on a standard 
printed circuit board substrate and covered with a 
plastic lens. The edge connector tab will stand 230°C 
for 5 seconds. Permanent damage to the display will 
result if lens temperature exceeds 70°C. Since the dis- 
play is not hermetic, immersion of the entire package 
during flux and clean operation may cause condensation 



of flux or cleaner on the underside of the lens. Only the 
edge connectors should be immersed. 

Rosin core solder, solid core solder, and low activity 
organic fluxes are recommended. Freon TF, Isopropanol, 
Methanol or Ethanol solvents are recommended only at 
room temperature and for short periods. The use of 
other solvents or elevated temperature use of the recom- 
mended solvents may cause permanent damage to the 
lens or display. 

Applications 

■ Digital instrumentation 
Power supply readouts 
Multimeters 
Panel meters 

Absolute Ratings 

Average Current per Segment 20 mA max 
Peak Current per Segment 

(100 Msec pulse) 150 mA max 

Reverse Voltage per Segment 3.0V max 
Operating and Storage Temperature -20°C to +70 C 

Relative Humidity at 35°C 98% 

Lead Temperature (Soldering, o 

5 seconds) 230 C 



Electrical and Optical Characteristics t a = 25°c 



PARAMETER 



Segment Light Intensity 
Digit and D.P. Light Intensity 
Segment Forward Voltage 
Segment Reverse Voltage 
Peak Wavelength 
Spectral Width, Half-Intensity 
Viewing Angle, Off Axis 
Intensity Matching 



CONDITIONS 



10 mA/Seg. Avg. 
lOmA/Seg.'Avg. 
10 mA/Seg. 
100/iA/Seg. 



1 mA/Seg. Avg. 



MIN 



TYP 



0.10 


0.20 


0.80 


1.6 




1.7 


3.0 


8.0 




660 




40 




60 




±33 



MAX 



2.0 



UNITS 

mcd 

mcd 

V 

V 

nm 

nm 

degrees 

% 



77 



00 

m 
tn 

CO 



Typical Applications 




-< 



-< 
-< 






•< 



<hVW= 




vcc 

ANALOG Vcc 



GND 

01 

02 

03 

D4 

'OUT 

f|N 

VREF 

SW1 



-2 
o 



r- 
<r: 



SW2 



C0NV 
COMPLETE 



SIGN 

VFLT 

V IN(-) 

V IN(+) 

VFB 



Hh 






<B <0 — CM 

>- ° S oc 

= = o «- 

< < -I DC 

^ n pi * 

O q> <B O 





S= 



tib* 



WV--1 



^K: 



-vw- 



~i 



-NAV 



.U.G3 

lo< 



A 

-J Q 

< Z 



A 

zo > 

>!:s 



78 



Typical Applications (continued) 



r— j^.' lit??! 7 




•< 



ANALOG VCC 



r-V/V-^ 



GND 
DIGIT t 
DIGIT 2 
DIGIT 3 
DIGIT 4 
•OUT 
'IN 
VREF 



*VV*r= 



~ CONV 

Q COMPLETE 

M START 

C$ CONV 

*^ SIGN 



C/> 
CD 

00 



1h 



FHh 



IS 



CM 



8 <"> 



in ; e .. 

i ° s. " 

^ « ° c 

e S 8> + 

tit id a u. 

" & — ?3 

£ o j c 

< < ° C 

<^ ri m «f 

I ( C I 

o o o o 

Z Z Z 2 



■A^^Aa^AAaAai 



■AAAr 




■WVi 




,-vvsrM*v4-\\\-*-VAH 



«1 



79 



00 

s 

00 
C/> 



Pin Connections 



PIN NO. 


ELECTRICAL 
CONNECTION 


1 


Digit No. 1 Segment G Anode 


2 


Digit No. 1 Segment G Cathode 


3 


Digit No. 1 Segment H Anode* 


4 


Digit No. 1 Segment J Cathode* 


5 


Digit No. 2 Segment DP Anode 


6 


Digit No. 3 Segment DP Anode 


7 


Digit No. 4 Segment DP Anode 


8 


Digit No. 5 Segment DP Anode 


9 


Segment D Anode 


10 


Segment C Anode 


11 


Segment B Anode 


12 


Segment A Anode 


13 


Segment E Anode 


14 


Segment F Anode 


15 


Segment G Anode 


16 


Digit No. 2 Cathode 


17 


Digit No. 3 Cathode 


18 


NC 


19 


Digit No. 4 Cathode 


20 


Digit No. 5 Cathode 



Segments H and J internally connected in series 



Physical Dimensions inchest 



millimeters) 



t.m 
mi) 



-OECIMAl POINT 




•r-f e/e e a? 



12 3 4 5 




0.7BI 



11.511 

».0M 

■"(1.021 



(7.15) 



Not* 1: Material: super-punch circuit board or approved equivalent 0.062/(1 .57) thick. 
Note 2: All tolerances are 0.015 (0.38). 



80 



$gg National 

KA Semiconductor 




NSB5931 0.5 Inch (1Z70 mm) 6-Digit 
Common Cathode GaAsP Display 


General Description 

The NSB5931 is a 6-digit, 0.5 inch (12.70 mm) common 
cathode GaAsP display. Each digit is comprised of 7 
segments with a right hand decimal point. Eight inputs 
are provided for selection of the appropriate segments 
and decimal (anodes) and 6 inputs for digits (cathodes) 
selection. The anodes are internally connected for 
multiplexing. 


Rosin core solder, solid core solder, and low activity 
organic fluxes are recommended. Freon TF, Isopropanol, 
Methanol or Ethanol solvents are recommended only 
at room temperature and for short periods. The use of 
other solvents or elevated temperature use of the recom- 
mended solvents may cause permanent damage to the 
lens or display. 

Applications 


Simple interface circuit may be used for TTL, DTL 
or MOS operation. This unit is a direct replacement 
for the Litronix DL6500. 


■ Industrial controls 

■ Data terminals 

■ Test equipment 




■ Point of sale 




■ Mini-computer readout 




■ Home consumer applications 


Recommended Display Processing 


Absolute Ratings 


The multi-digit series display is constructed on a standard 
printed circuit board substrate and covered with a 
plastic lens. The edge connector tab will stand 230 C 
for 5 seconds. Permanent damage to the display wiH 
result if lens temperature exceeds 70°C. Since the dis- 
play is not hermetic, immersion of the entire package 
during flux and clean operation may cause condensation 
of flux or cleaner on the underside of the lens. Only 
the edge connectors should be immersed. 


Average Current per Segment 20 mA 
Peak Current per Segment 

(100 /usee pulse) 150 mA 
Reverse Voltage per Segment 3.0V max 
Operating and Storage Temperatures -20°C to +70°C 
Relative Humidity at 35°C 98% 
Terminal Temperature (Soldering, 

5 seconds) 230°C max 


Electrical and Optical Characteristics 


Ta = 25°C Room Temperature 


PARAMETER 


CONDITIONS 


MIN 


TYP 


MAX 


UNITS 


Segment Light Intensity 


10 mA/Seg. Avg. 


0.10 


0.20 




mcd 


Digit and D.P. Light Intensity 


1 mA/Seg. Avg. 


0.80 


1.6 




mcd 


Segment Forward Voltage 


10 mA/Seg. 






1.7 


2.0 


V 


Segment Reverse Voltage 


100 /iA/Seg. 




3.0 


8.0 




V 


Intensity Matching 


10 mA/Seg. Avg. 




±33 




% 


Peak Wavelength 








660 




nm 


Spectral Width, Half Intensity 








40 




nm 


Viewing Angle, Off Axis 








60 




Degrees 



(0 
00 

a 



81 



5 
g 

CD 
CO 

z 



Pin Connections 



PIN NO. 


ELECTRICAL 
CONNECTION 


1 


Digit 1 Cathode 


2 


Digit 2 Cathode 


3 


Digit 3 Cathode 


4 


Segment A Anode 


5 


Segment F Anode 


6 


Segment B Anode 


7 


Segment G Anode 


8 


Digit 4 Cathode 


9 


Segment D Anode 


" 10 


Segment C Anode 


11 


Segment E Anode 


12 


Segment D.P. Anode 


13 


Digit 5 Cathode 


14 


Digit 6 Cathode 



Physical Dimensions and Display Capability Outline inches (millimeters) 

. ""* (0.701 
. I * - „ „ 



un ~I 

(7J3) MR 
l (1M) 



1,270 1.815 
(32.101 (tS.70) 




0.100 

0.S4) 



-Q 




BBBBBB 



MM 

iojoo 



1 2 3 4 S I I • t 10 11 12 13 14 



1.040 

?=- 141 
11 J2) 
0.101 IJOO 





(11.7) (43.SI 

T01 MM-MCUM 



Note 1: Material: superpunch or approved equivalent. 
Note 2: Tolerances: ±0.015/(0.38). 



Segment Identification 




82 



HH National 

JLA Semiconductor 

NSB7400, NSB7401, NSB7402, NSB7403, NSB7404, NSB7405 
0.7 Inch 4-Digit LED Duplex Clock Displays 



General Description 

The NSB7400 series is a 4-digit, 0.7 inch high GaAsP LEO 
clock display, designed specifically for duplexed opera- 
tion. These common anode displays are directly compati- 
ble with the MM5419, MM5420, MM5421, MM5422 and 
MM5455, MM5456, MM5457 duplex drive MOS/LSI in- 
tegrated circuits. Electrical connection is by PCB type 
terminals on the edge of the display. 

The optical design of this clock display series creates a 
distinct, easy-to-read display with a wide viewing angle 
and excellent ON/OFF contrast and segment uniformity. 
The beveled segments provide a pleasing numeral shape. 
The display features a diffuser tape or a red plastic lens 
(optional) over the reflector front surface for segment 
uniformity. 



Recommended Display Processing 

The multidigit series display is constructed on a stand- 
ard printed circuit board substrate and covered with a dif- 
fuser tape or a plastic lens. The edge connector tab will 
stand 230 °C for 5 seconds. Permanent damage to the 
display will result if the diffuser tape or the plastic lens 
temperature exceeds 70 °C. Since the display is not 
hermetic, immersion of the entire package during flux 
and clean operation may cause condensation of flux or 
cleaner on the underside of the diffuser tape or the 
plastic lens. Only the edge connectors should be im- 
mersed. 

Rosin core solder, solid core solder, and low activity 
organic fluxes are recommended. Freon TF, Isopropanol, 
Methanol or Ethanol solvents are recommended only at 
room temperature and for short periods. The use of other 



solvents or elevated temperature use of the recommend- 
ed solvents may cause permanent damage to the display. 



Applications 

■ Alarm clocks 

■ Desk clocks 

■ Clock radios 



Features 

■ Large 0.7 inch numerals 

■ Small board size 

■ Pin-out compatible with MM5419 and MM5455 series 
clock integrated circuits 

■ PM indicator for 12-hour format 

■ 12-hour and 24-hour operations 

■ Colon indicator (single dot) 

■ Sleep/alarm indicator 



Absolute Ratings 

Average Current per Segment 20 mA max 

Peak Current per Segment 75 mA max 

Reverse Voltage per Segment 3.0V max 

Operating and Storage Temperature - 20 °C to + 70 °C 

Relative Humidity at 35 °C 98% 



Lead Temperature (Soldering, 5 seconds) 



230 °C 



Electrical and Optical Characteristics t a =25-c 



CO 
CO 

4* 

8 



co 

CD 

*> 

o 



CO 
00 

J3 



CO 
09 

4* 
O 
CO 



CO 
00 

2 



CO 
00 

J* 
o 
en 



Parameter 



Conditions 



Min 



Typ 



Max 



Units 



Segment Light Intensity (Peak) 
Digit and DP Light Intensity (Peak) 
Segment Forward Voltage 
Segment Reverse Voltage 
Peak Wavelength 
Spectral Width, Half-Intensity 
Viewing Angle, Off Axis 
Intensity Matching 



10 m A/Segment Peak 
10 m A/Segment Peak 
10 mA/Segment Peak 
100 jiA/Segment 



10 mA/Segment Average 



83 



0.10 


0.20 


0.80 


1.6 




1.7 


3.0 


8.0 




660 




40 




60 




±33 



2.0 



med 
med 

V 

V 

nm 

nm 
degrees 

% 



8 



s 
2 

CD 
CO 



8 

2 
oo 

z 

&r 
2 

GO 
(0 



Display Pin-Out Schematic 



I2CI 

L.J 



2 r 



"\ 



■c: 



it 



1 2 ![e 



D I 



..'~3 



'"*: 



![a 



■3[ 



HE 



1 



2[e 



6 6 6 6 



£ 



![A 



ii 



2[B 



y.o 



][c He 



U 



2[a 



B][ 



Hi 



2E» 



3 Ec 



33E 



H» 



© 

CD 
(0 



8 

2 
m 

0) 



DISPLAY OPTIONS 



Part* 


Feature/Function 


NSB7400 


12-hour format with single piece reflector; with PM indicator; 
with red plastic lens. 


NSB7401 


24-hour format with single piece reflector; without PM 
indicator; with red plastic lens. 


NSB7402 


12-hour format with single piece reflector; with PM indicator; 
with red mylar tape (no lens). 


NSB7403 


12-hour format with single piece reflector, with PM indicator, 
with clear mylar tape (no lens). 


NSB7404 


24-hour format with single piece reflector; without PM 
indicator; with red mylar tape (no lens). 


NSB7405 


24-hour format with single piece reflector; without PM 
indicator, with clear mylar tape (no lens). 



84 



Physical Dimensions inches (millimeters) (NSB7400, NSB7402, NSB7403 12-hour format) 





aHHEIHHHHIJRHHHHHHHHHHiaHHHHHiaHH 



-TP 



1W 

<1JM) 
KHUEl 



MO OH CLEAR 
■VLAIITAK- 

lomooAii 



asm tnmn 






un 

lum 


_L 






T" 







lUEmiMH DOT 



Connection Table (NSB7400, NSB7402, NSB7403 12-hour format) 



CO 

00 

2 
8 



CO 
CO 

o 



co 

00 

s 



co 

00 

8 



Pln# 


Electrical Connection 


Pin* 


Electrical Connection 


1 


Common Anode 1 


16 


Digit 3 Segments B, G Cathode 


2 


Common Anode 2 


17 


Digit 3 Segments C, D Cathode 


3 
4 


No Connection 
No Connection 


18 


(Digit 3 Segment E Cathode, 
(Digit 4 Segment E Cathode 


5 


PM Cathode 


19 


Digit 4 Segments B, G Cathode 


6 

7 


Digit 1 Segment B Cathode 
No Connection 


20 
21 


Digit 4 Segments C, D Cathode 
Digit 4 Segments A, F Cathode 


8 


No Connection 


22 


No Connection 


9 


(Digit 1 Segment C Cathode, 
(Digit 2 Segment E Cathode 


23 
24 


No Connection 
No Connection 


10 


Digit 2 Segments B, G Cathode 


25 


No Connection 


11 


No Connection 


26 


Common Anode 2 


12 


Digit 2 Segments C, D Cathode 


27 


Sleep/Alarm Dot Cathode 


13 


Digit 2 Segments A, F Cathode 


28 


Sleep/Alarm Dot Anode 


14 


No Connection 


29 


Common Anode 1 


, 15 


Digit 3 Segments A, F Cathode 


30 


Colon Dot Cathode 



CO 
00 

2 
2 



CO 
00 

2 

o 
en 



85 



o 
^ , 

OQ 
CO 



s 
s 

CD 
CO 



CO 

o 

s 

OQ 
CO 



CM 

o 

OQ 
CO 



o 

OQ 
CO 



S 

OQ 
CO 



Physical Dimensions inches (millimeters) (NSB7401, NSB7404, NSB7405 24-hour format) 



IU70) 



30 




DO 



HHEIHHHHaEiHHElEliaHElEliaHiaElElflElElJaElH 



-»j (— <1.SM) 



b.wi rami 




Connection Table (NSB7401, NSB7404, NS67405 24-hour format) 



Pin# 


Electrical Connection 


Pin* 


Electrical Connection 


1 


Common Anode 1 


16 


Digit 3 Segments B, G Cathode 


2 


Common Anode 2 


17 


Digit 3 Segments C, D Cathode 


3 ■ 
4 


No Connection 
No Connection 


18 


i Digit 3 Segment E Cathode, 
(Digit 4 Segment E Cathode 


5 


No Connection 


19 


Digit 4 Segments B, G Cathode 


6 

7 
8 

9 


Digit 1 Segment B Cathode 

Digit 1 Segments A, G Cathode 

Digit 1 Segments D, E Cathode 

(Digit 1 Segment C Cathode, 
(Digit 2 Segment E Cathode 


20 
21 
22 
23 
24 


Digit 4 Segments C, D Cathode 
Digit 4 Segments A, F Cathode 
No Connection 
No Connection 
No Connection 


10 


Digit 2 Segments B, G Cathode 


25 


No Connection 


11 


No Connection 


26 


Common Anode 2 


12 


Digit 2 Segments C, D Cathode 


27 


Sleep/Alarm Dot Cathode 


13 


Digit 2 Segments A, F Cathode 


28 


Sleep/Alarm Dot Anode 


14 


No Connection 


29 


Common Anode 1 


15 


Digit 3 Segments A, F Cathode 


30 


Colon Dot Cathode 



86 



JJgl National 

KA Semiconductor 



NSN3XX, NSB3XXX 0l3" Multidigit 
LED Numeric Display Series 



General Description 

Multidigit GaAsP LED reflective displays from National 
Semiconductor represent the latest in design advances 
in the 0.3" format The series provides the designer with 
an effective, easy to implement answer to the need for an 
inexpensive large numeric display. 

Basically 2-digit and 4-digit displays, the units are end 
stackable for applications requiring additional digits. 
When combined with the options for overflow, polarity 
and other indications, virtually all display requirements 
can be satisfied. Versatility is offered the designer with 
direct drive and multiplex versions in both the common 
anode and common cathode forms. Electrical contact is 
by PCB type terminals on the edges of the display. 

The optical design of this display series creates a 
distinct easy-to-read display with a wide viewing angle, 
excellent ON-OFF contrast and segment uniformity. 



Features 

■ Multidigit packages prematched for brightness 

■ End stackable dual and quad formats to fit your 
application 

■ PC board mounted units for low cost 

■ Common anode, common cathode, multiplexed, or 
direct drive 



Electrical and Optical Characteristics t a =25°c 



Applications 



Test and measurement equipment 

Consumer products 

Instrumentation 

Industrial controls 

Digital instruments 

Desk top calculator 

Clocks 

Elevator floor indicator 

TV channel indicator 



Absolute Ratings 

Average Current/Segment 20 m.A max 

Peak Current/Segment 75 mA max 

Reverse Voltage/Segment 3.0V max 

Operating and Storage Temperature - 20 °C to + 70 °C 

Relative Humidity at 35 °C 98% 

Terminal Temperature (Soldering, 5 seconds) 230 °C 



C/> 

i 



C/> 
00 
CO 



Parameter 



Segment Light Intensity (Peak) 
Digit and DP Light Intensity (Peak) 
Segment Forward Voltage 
Segment Reverse Voltage 
Peak Wavelength 
Spectral Width, Half-Intensity 
Viewing Angle, Off Axis 
Intensity Matching 



Conditions 



10 mA/Seg. Peak 
10 mA/Seg. Peak 
10 mA/Seg. Peak 
100^A/Seg. 



10 mA/Seg. Avg. 



Min 



0.10 
0.80 



3.0 



Typ 



0.20 
1.6 
1.7 
8.0 

660 
40 
60 

±33 



Max 



2.0 



Units 



mcd 
mcd 

V 

V 

nm 

nm 
degrees 

% 



87 



CO 
00 
CO 



CO 

z 



Performance Characteristics Curves 



Light Intensity vs 
Ambient Temperature 



Forward Current (l F ) vs 
Forward Voltage (V» 



Light Intensity vs 
Forward Current (l F ) 



2S0 

* 200 

> 

h- 

z 

> 100 

< 

S go 















so 

< 40 

»- 
z 
£ 30 

cc 

3 

£ 20 
1 

K 

2 io 






















300 
> 250 

5 200 

z 
uj 1B0 

> 

« mo 

cc 
50 















































































































































































































































































f 














































/ 


























































H 






























/ 
















































/ 




























































/ 










































































-• 


f 

































TEMPERATURE PC) 



0.4 0.0 1.2 1.6 2.0 

FORWARD VOLTAGE (V) 



Available Display Formats (Dual Digits) 



DIGIT 
SIZE 

#0-3" 



u~zi 



u 



H- n 



+ I.O. 



on n-* 
uo ^ 



OQ n 
U.O. ' 



10 mA COMMON 
CATHODE- 
MULTIPLEXED 



10 mA COMMON 
ANODE- 
MULTIPLEXED 



10 mA COMMON 
CATHODE- 
DIRECT 



10 mA COMMON 
ANODE- 
DIRECT 



NSN3 




Physical Dimensions inches (millimeters) 



0.175 



0.80 
(20.32) 



0.80 



(20.320) 




W El 
UIMI. 



0.10 




(2.54) 



0.188 



(4.775) 



I- 

0.40 



0.30 
(7.620) 



(10.160) 



CET 




10 20 30 40 50 60 70 
FORWARD CURRENT (mA) 



DEVICES CURRENTLY 


AVAILABLE 


NSN334 


4B. 


NSN373 


BB 


NSN374 


BB 


NSN381 


B.B 


NSN382 


B.B 





1 


t 

0.5 
(12.700) 

1 




0.225 




(5.715) 



* Pin 1 as shown, pin out follows counterclockwise 



88 



Available Display Formats (Quad Digits) 



C/> 



CO 



DIGIT 

SIZE CODE 



SECOND TWO 
FORMAT DIGIT CODE 



NSB 3 




Z 
C/> 
00 
CO 



10 mA COMMON 
CATHODE - 
MULTIPLEXED 



10 mA COMMON 
ANODE- 
MULTIPLEXED 



DEVICES CURRENTLY 
AVAILABLE 



NSB3382 +1.8.B.U. 
NSB3881 B.B.8.B. 
NSB3882 B.B.B.B. 



Physical Dimensions inches (millimeters) 



0.80 
(20.32) 



0.165 
(4.191) 

1_ 



T 



1.59 



(40.386) 




0.188 
(4.775) 



III O O O 
UI.UU-ll.U. 



_ELEL 



0.4 



(10.160) 



-Ikl 



0.3 



100 (7.620) 
(2.54) 





1 


t 

0.5 
(12.700) 

1 




0.225 




(5.715) 



Pin 1 as shown, pin out follows counterclockwise 



89 



Connection Tables (Dual Digits) 



Pin 
Number 


NSN334 


NSN373 


NSN374 


NSN381 


NSN382 


1 


Cathode J 


Anode G 


Cathode G 


Anode G 


Cathode E 




Digit 1 


Digit 1 


Digit 1 






2 


Cathode C 


Anode E 


Cathode E 


Anode E 


Common Anode 




Digit 1 


Digit 1 


Digit 1 




Digit 1 


3 


Cathode DP 


Anode D 


Cathode D 


NC 


NC 




Digit 1 


Digit 1 


Digit 1 






4 


Cathode G 


Anode C 


Cathode C 


Common Cathode 


Cathode C 




Digit 2 


Digit 1 


Digit 1 


Digit 1 




5 


Cathode E 


Anode G 


Cathode G 


Anode D 


Common Anode 




Digit 2 


Digit 2 


Digit 2 




Digit 2 


6 


Cathode D 


Anode E 


Cathode E 


Common Cathode 


Cathode D 




Digit 2 


Digit 2 


Digit 2 


Digit 2 




7 


Cathode C 


Anode D 


Cathode D 


Anode DP 


Cathode DP 




Digit 2 


Digit 2 


Digit 2 






8 


Cathode DP 


Anode C 


Cathode C 


Anode C 


Cathode G 




Digit 2 


Digit 2 


Digit 2 






9 


Cathode B 


Common Cathode 


Common Anode 


Anode B 


Cathode B 




Digit 2 


Digits 1 and 2 


Digits 1 and 2 






10 


NC 


Anode B 
Digit 2 


Cathode B 
Digit 2 


NC 


NC 


11 


Cathode A 


Anode A 


Cathode A 


NC 


NC 




Digit 2 


Digit 2 


Digit 2 






12 


Cathode F 


Anode F 


Cathode F 


NC 


NC 




Digit 2 


Digit 2 


Digit 2 






13 


Cathode B 


Anode B 


Cathode B 


Anode A 


Cathode A 




Digit 1 


Digit 1 


Digit 1 






14 


Common Anode 


Anode A 


Cathode A 


NC 


NC 




Digits 1 and 2 


Digit 1 


Digit 1 






15 


Cathode H 


Anode F 


Cathode F 


Anode F 


Cathode F 




Digit 1 


Digit 1 


Digit 1 






16 


Cathode G 
Digit 1 


NC 


NC 


NC 


NC 



Device 
Type 


Format 


Drive 


NSN334 
NSN373 
NSN374 
NSN381 
NSN382 


+LB. 

SB No DP 
SB No DP 

B.B 
SB 


Common Anode— Direct 
Common Cathode— Direct 
Common Anode— Direct 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 



90 



Connection Tables (Quad Digits) 



Pin 
Number 


NSB3382 


NSB3881 


NSB3882 


1 


NC 


NC 


NC 


2 


Cathode E 


Anode E 


Cathore E 


3 


Common Anode 


Common Cathode 


Common Anode 




Digit 1 


Digit 1 


Digit 1 


4 


Cathode J 
Digit 1 


NC 


NC 


5 


Cathode H 
Digit 1 


NC 


NC 


6 


Common Anode 


Common Cathode 


Common Anode 




Digit 2 


Digit 2 


Digit 2 


7 


Cathode D 


Anode D 


Cathode D 


8 


Cathode G 


Anode G 


Cathode G 


9 


NC 


NC 


NC 


10 


Common Anode 


Common Cathode 


Common Anode 




Digit 3 


Digit 3 


Digit 3 


11 


Cathode B 


Anode B 


Cathode B 


12 


Cathode A 


Anode A 


Cathode A 


13 


Cathode F 


Anode F 


Cathode F 


14 


Common Anode 


Common Cathode 


Common Anode 




Digit 4 


Digit 4 


Digit 4 


15 


Cathode DP 


Anode DP 


Cathode DP 


16 


Cathode C 


Anode C 


Cathode C 




Device 
Type 


Format 


Drive 






NSB338: 


> 


4B.B.B 


Common Anode— Multiplexed 






NSB3881 




B.B.B.B 


Common Cathode— Multiplexed 






NSB388! 


> 


B.B.B.B. 


Common Anode — Multiplexed 





Segment Identification 



•Istl' 

IJJ: 



DP 



91 



Recommended Display Processing 

The multidigit series display is constructed on a stand- 
ard printed circuit board substrate and covered with a 
plastic lens. The edge connector tab will stand a 
temperature of 230 °C for 5 seconds. The display lens 
area must not be elevated in temperature above 70°C.To 
do so will result in permanent damage to the display. 
Since the display is not hermetic, immersion of the entire 
package during flux and clean operations may cause 
condensation of flux or cleaner on the underside of the 
lens. It is recommended that only the edge connectors be 
immersed. Only rosin core solder, solid core solder, and 
low activity organic fluxes are recommended. Cleaning 
solvents are Freon TF, Isopropanol, Methanol, or Ethanol. 
These solvents are recommended only at room 
temperature and for short time periods. The use of other 
solvents or elevated temperature use of the recom- 
mended solvents may cause permanent damage to the 
lens or display. 

Special Formats 

National is constantly adding new formats to its line of 
LED displays; For example: 

NSB3411 Clock Display 0.3 inch, 4-digit display, 24-hour 
format with colon and AM/PM indicator, common 
cathode multiplexed driva 



Optional Pins 



The standard LED numeric display offers a great deal of 
flexibility in mounting through the use of PCB edge con- 
nections. However, many designers prefer that pins be 
added to the PCB prior to shipping. 

The standard pin used by NSC is outlined below and may 
be ordered by simply adding the designation "Flow 12" to 
the standard part number. Minimum order quantities and 
additional costs are involved, so check with the National 
Sales Office nearest you for more information. 

For a complete discussion of various mounting tech- 
niques, consult the application note on "Mounting Tech- 
niques for Multidigit LED Numeric Displays;' AN-170. 



0.030 

(0.782) 

0.050 
(1.270) 


h— 




0.140 
(3.550) 




i- TYPICAL LED DISPLAY 




w 








' 


0.018 
(0.457) 




/ , 


0.040 






40 


0.! 
















r 








1 

0.0 


,f=H 


L^ T 




(1.016) 
0.4 
(10. 


(14. 


148) ' 


I_J 

0.016 
(0.406) 


u 




t 

0417 
(10.582) 

1 


17 
»2) 




t 


— - 


0.1C 
TOL 


NON- 


ENTERS 
tCCUM 


— 









All dimensions are In inches (millimeters) 



92 



^National 

Mm Semiconductor 



NSN5XX, NSB5XXXa5"Multidigit 
LED Numeric Display Series 



General Description 



Applications 



Multidigit GaAsP LED reflective displays from National 
Semiconductor represent the latest in design advances 
in the 0.5" format The series provides the designer with 
an effective, easy to implement answer to the need for an 
inexpensive large numeric display. 

Basically 2-digit and 4-digit displays, the units are end 
stackable for applications requiring additional digits. 
When combined with the options for overflow, polarity 
and other indications, virtually all display requirements 
can be satisfied. Versatility is offered the designer with 
direct drive and multiplex versions in both the common 
anode and common cathode forms. Electrical contact is 
by PCB type terminals on the edges of the display. 

The optical design of this display series, creates a 
distinct easy-to-read display with a wide viewing angle, 
excellent ON-OFF contrast and segment uniformity. 



Features 

■ Multidigit packages prematched for brightness 

■ End stackable dual and quad formats to fit your 
application 

■ PC board mounted units for low cost 

■ Common anode, common cathode, multiplexed, or 
direct drive 



Electrical and Optical Characteristics t a =25»c 



■ Test and measurement equipment 

■ Consumer products 

■ Instrumentation 

■ Industrial controls 

■ Digital instruments 

■ Desk top calculator 

■ Clocks 

■ Elevator floor indicator 

■ TV channel indicator 



Absolute Ratings 

Average Current/Segment 

Peak Current/Segment 

Reverse Voltage/Segment 

Operating and Storage Temperature 

Relative Humidity at 35 °C 

Terminal Temperature (Soldering, 5 seconds) 230 *C 



20 mA max 

75 mA max 

3.0V max 

-20°Cto +70°C 

98% 



0) 

z 

oi 



CD 



Parameter 



Conditions 



Min 



Typ 



Max 



Units 



Segment Light Intensity (Peak) 
Digit and DP Light Intensity (Peak) 
Segment Forward Voltage 
Segment Reverse Voltage 
Peak Wavelength 
Spectral Width, Half-Intensity 
Viewing Angle, Off Axis 
Intensity Matching 



10 mA/Seg. Peak 
10 mA/Seg. Peak 
10 mA/Seg. Peak 
100 fiA/Seg. 



10 mA/Seg. Avg. 



0.10 
0.80 



3.0 



0.20 
1.6 
1.7 
8.0 

660 
40 
60 

±33 



2.0 



mcd 
mcd 

V 

V 

nm 

nm 
degrees 

% 



93 



m 
CD 
(/) 

Z 

z 

0) 



Performance Characteristics Curves 



Light Intensity vs 
Ambient Temperature 



Forward Current (l F ) vs 
Forward Voltage (V F ) 



Light Intensity vs 
Forward Current (l F ) 



250 

g 200 

> 

£ 'SO 

z 

> 100 

P 

< 

£ so 















50 

< 40 

z 

£ 30 

cc 

3 
O 

g 20 

< 
* 

2 io 






















300 

> 250 

5 200 

z 
u, 150 

> 

< ioo 

50 














































































































































































































































































f 














































/ 


























































H 














































































/ 




























































/ 










































































^ 


r 

































TEMPERATURE (°C) 



0.4 0.0 1.2 1.6 2.0 

FORWARD VOLTAGE (V) 



Available Display Formats (Dual Digits) 



DIGIT 
SIZE 



j—jtS | 5 



U' r ' 



+ io 



o o 
u u 



on 
u.o. 



EZ 



NSN 5 




Physical Dimensions inches (millimeters) 

1.0 



0.175 



1.05 
(26.67) 



(25.4) 




"ET 



7Z7/T/ 
U/./_t/. 




ELB 



0.3 



(7.62) 



0.5 



0.5 
(12.7) 



(12.7) 

*Pin 1 as shown, pin out follows counterclockwise 



10 20 30 40 50 60 70 
FORWARD CURRENT (mA)> 



10 raA COMMON 
CATHODE- 
MULTIPLEXED 


L- 


> 


10 mA COMMON 
ANODE- 
MULTIPLE XEO 


QZ 




10 mA COMMON 
CATHODE- 
DIRECT 


0= 




10 mA COMMON 
ANODE- 
DIRECT 


4 





DEVICES CURRENTLY 


AVAILABLE 


NSN534 


<B. 


NSN581 


B.B 


NSN582 


8.B. 


NSN583 


B.B. 


NSN584 


B.B 



t 

0.7 
(17.78) 

1 




0.28 





(7.112) 



94 



Available Display Formats (Quad Digits) 



CO 

Z 
cji 



DIGIT 

SIZE CODE 



SECOND TWO 
FORMAT DIGIT CODE 



NSB 5 




10 NiA COMMON 
CATHODE- 
MULTIPLEXED 



10 mA COMMON 

AN00E- 

MULTIPLEXED 



CO 
00 
CJI 



DEVICES CURRENTLY 
AVAILABLE 



NSB5382 + I.B.B.B. 
NSB5881 B.B.B.B. 
NSB5882 B.B.B.B. 



Physical Dimensions inches (millimeters) 



1.0 
(25.4) 



1.99 



(50.546) 



0.18 
(4.572) 



I 




0.3 
(7.62) 



III o o o 

LU.LJ.LJ.U. 



jELin 



-J 

0.5 



(2.54) 



(12.7) 



* Pin 1 as shown, pin out follows counterclockwise 



95 



0.5 
0.100 (12.7) 







t 

0.7 
(17.78) 




0.28 . 





(7.112) 



Connection Tables (Dual Digits) 



Pin 
Number 



1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 
20 



NSN534 



NC 

Cathode J 
Digit 1 

NC 

Cathode C 
Digit 1 

Cathode DP 
Digit 1 

Cathode G 
Digit 2 

Cathode E 
Digit 2 

Cathode D 
Digit 2 

Cathode C 
Digit 2 

Cathode DP 
Digit 2 

Common Anode 
Digits 1 and 2 

Cathode B 
Digit 2 

Cathode A 
Digit 2 

Cathode F 
Digit 2 

Cathode B 
Digit 1 

NC 

Cathode H 
Digit 1 

NC 

NC 

Cathode G 
Digit 1 



NSN581 



Anode G 

Common Cathode 
Digit 1 

Anode E 

NC 

NC 

NC 

Anode D 

Anode DP 

Anode C 

Common Cathode 
Digit 2 

Anode B 

NC 

NC 

NC 

NC 

NC 

Anode A 

Anode F 

NC 
NC 



NSN582 



Cathode G 

Common Anode 
Digit 1 

Cathode E 

NC 

NC 

NC 

Cathode D 

Cathode DP 

Cathode C 

Common Anode 
Digit 2 

Cathode B 

NC 

NC 

NC 

NC 

NC 

Cathode A 

Cathode F 

NC 
NC 



NSN583 



Anode E 
Digit 1 

NC 

Anode D 
Digit 1 

Anode DP 
Digit 1 

Anode C 
Digit 1 

Anode G 
Digit 2 

Anode E 
Digit 2 

Anode D 
Digit 2 

Anode DP 
Digit 2 

Anode C 
Digit 2 

Common Cathode 
Digits 1 and 2 

Anode B 
Digit 2 

Anode A 
Digit 2 

Anode F 
Digit 2 

Anode B 
Digit 1 

Anode A 
Digit 1 

NC 

Anode F 
Digit 1 - 

NC 

Anode G 
Digit 1 



NSN584 



Cathode E 
Digit 1 

NC 

Cathode D 
Digit 1 

Cathode C 
Digit 1 

Cathode DP 
Digit 1 

Cathode G 
Digit 2 

Cathode E 
Digit 2 

Cathode D 
Digit 2 

Cathode C 
Digit 2 

Cathode DP 
Digit 2 

Common Anode 
Digits 1 and 2 

Cathode B 
Digit 2 

Cathode A 
Digit 2 

Cathode F 
Digit 2 

Cathode B 
Digit 1 

Cathode A 
Digit 1 

NC 

Cathode F 
Digit 1 

NC 

Cathode G 
Digit 1 



Device 
Type 


Format 


Drive 


NSN534 
NSN581 
NSN582 
NSN583 
NSN584 


HB 
B.B 
B.B. 
B.B. 
BE. 


Common Anode— Direct 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 
Common Cathode— Direct 
Common Anode— Direct 



96 



Connection Tables (Quad Digits) 



Pin 
Number 


NSB5382 


NSB5881 


NSB5882 


1 


Cathode A 


Anode A 


Cathode A 


2 


NC 


NC 


NC 


3 


Cathode D 


Anode D 


Cathode D 


4 


Common Anode 


Common Cathode 


Common Anode 




Digit 1 


Digit 1 


Digit 1 


5 


Cathode J 
Digit 1 


NC 


NC 


6 


Cathode H 
Digit 1 


NC 


NC 


7 


Common Anode 


Common Cathode 


Common Anode 




Digit 2 


Digit 2 


Digit 2 


8 


Cathode C 


Anode C 


Cathode C 


9 


NC 


NC 


NC 


10 


Common Anode 


Common Cathode 


Common Anode 




Digit 3 


Digit 3 


Digit 3 


11 


Cathode B 


Anode B 


Cathode B 


12 


Cathode F 


Anode F 


Cathode F 


13 


Cathode E 


Anode E 


Cathode E 


14 


Common Anode 


Common Cathode 


Common Anode 




Digit 4 


Digit 4 


Digit 4 


15 


Cathode DP 


Anode DP 


Cathode DP 


16 


Cathode G 


Anode G 


Cathode G 



Device 
Type 


Format 


Drive 


NSB5382 
NSB5881 
NSB5882 


4B.B.B 
B.B.B.B 
B.B.B.B 


Common Anode— Multiplexed 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 



Segment Identification 



UJ'. 



DP 



97 



Recommended Display Processing 

The multidigit series display is constructed on a stand- 
ard printed circuit board substrate and covered with a 
plastic lens. The edge connector tab will stand a 
temperature of 230 °C for 5 seconds. The display lens 
area must not be elevated in temperature above 70 °C. To 
do so will result in permanent damage to the display. 
Since the display isnot hermetic, immersion of the entire 
package during flux and clean operations may cause 
condensation of flux or cleaner on the underside of the 
lens. It is recommended that only the edge connectors be 
immersed. Only rosin core solder, solid core solder, and 
low activity organic fluxes are recommended. Cleaning 
solvents are Freon TF, Isopropanol, Methanol, or Ethanol. 
These solvents are recommended only at room 
temperature and for short time periods. The use of other 
solvents or elevated temperature use of the recom- 
mended solvents may cause permanent damage to the 
lens or display. 

Special Formats 

National is constantly adding new formats to its line of 
LED displays. Here are just a few of the products not 
listed on the guide which are available. 

Clock Formats 

NSB5410 0.5 inch 4-digit display. 12-hour format with 

colon and AM/PM indicator, common 

cathode multiplexed drive. 
NSB5430 Same as NSB5410 except direct drive. 



DVM Format 
NSB5388 0.5 inch 3 1 /2 digit display pin compatible 
with National's ADD3500 DVM chip (see 
separate data sheet). 



Optional Pins 



The standard LED numeric display offers a great deal of 
flexibility in mounting through the use of PCB edge con- 
nections. However, many designers prefer that pins be 
added to the PCB prior to shipping. 

The standard pin used by NSC is outlined below and may 
be ordered by simply adding the designation "Flow 12" to 
the standard part number. Minimum order quantities and 
additional costs are involved, so check with the National 
Sales Office nearest you for more information. 

For a complete discussion of various mounting techni- 
ques, consult the application note on "Mounting Techni- 
ques for Multidigit LED Numeric Displays)' AN-170. 

















0.030 

(0.762) 


— 


















0.050 
(1.270) 


0.140 

T (3.556) 






r- TYPICAL LED OISPLAY 




n n 


Ml 






' 


0.018 
(0.457) 

\ 






/ , 


0.040 
(1.016) 


















L 


0.040 








L 




0.5 

(14. 


" t c 






1 1 




(1.016) 
0.< 
(10. 


148) ' *- 


-a 


a — 




f 

0.417 
(10.592) 

1 


17 
592) 




t 
















— 




0.1 ( 
(2.W 
TOL 


NON- 


ENTERS 
ItCCUM 


-* 




0.016 
" (0.406) 









All dimensions are In Inches (millimeters) 



98 



JOT National 

mjM Semiconductor 



NSN7XX, NSB7XXX ar'Multidigit 
LED Numeric Display Series 



General Description 

Multidigit GaAsP LED reflective displays from National 
Semiconductor represent the latest in design advances 
in the 0.7" format. The series provides the designer with 
an effective, easy to implement answer to the need for an 
inexpensive large numeric display. 

Basically 2-digit and 4-digit displays, the units are end 
stackable for applications requiring additional digits. 
When combined with the options for overflow, polarity 
and other indications, virtually all display requirements 
can be satisfied. Versatility is offered the designer with 
direct drive and multiplex versions in both the common 
anode and common cathode forms. Electrical contact is 
by PCB type terminals on the edges of the display. 

The optical design of this display series creates a 
distinct easy-to-read display with a wide viewing angle, 
excellent ON-OFF contrast and segment uniformity. 



Features 

■ Multidigit packages prematched for brightness 

■ End stackable dual and quad formats to fit your 
application 

■ PC board mounted units for low cost 

■ Common anode, common cathode, multiplexed, or 
direct drive 



Electrical and Optical Characteristics t a =25°c 



Applications 



Test and measurement equipment 

Consumer products 

Instrumentation 

Industrial controls 

Digital instruments 

Desk top calculator 

Clocks 

Elevator floor indicator 

TV channel indicator 



C/> 

z 

■si 



C/> 
CD 

■si 



Absolute Ratings 



Average Current/Segment 20 mA max 

Peak Current/Segment 75 mA max 

Reverse Voltage/Segment 3.0V max 

Operating and Storage Temperature - 20 "C to + 70 "C 
Relative Humidity at 35 °C 98% 

Terminal Temperature (Soldering, 5 seconds) 230 °C 



Parameter 


Conditions 


Min 


Typ 


Max 


Units 


Segment kight Intensity (Peak) 


10 mA/Seg. Peak 


0.10 


0.20 




mcd 


Digit and DP Light Intensity (Peak) 


10 mA/Seg. Peak 


0.80 


1.6 




mcd 


Segment Forward Voltage 


10 mA/Seg. Peak 




1.7 


2.0 


V 


Segment Reverse Voltage 


100 MA/Seg. 


3.0 


8.0 




V 


Peak Wavelength 






660 




nm 


Spectral Width, Half-Intensity 






40 




nm 


Viewing Angle, Off Axis 






60 




degrees 


Intensity Matching 


10 mA/Seg. Avg. 




±33 




% 



99 



Performance Characteristics Curves 



oo 



Light Intensity vs 
Ambient Temperature 



Forward Current (l F ) vs 
Forward Voltage (V» 



Light Intensity vs 
Forward Current (l F ) 



(/> 



£ "0 

z 

> 100 

< 

c jo 

















1 * 

z 

£ 30 

cc 

3 

u 

g 20 

< 
£ 

K 

£ to 






















300 
> 2S0 

£ 200 

z 
uj ISO 

> 

< ioo 

GC 

SO 






































. 








































































































































































































































1 














































/ 


























































H 






























J 
















































/ 




























































/ 










































































*> 


' 

































so 

TEMPERATURE ("O 



0.4 0.8 1.2 ' 1.6 2.0 

FORWARD VOLTAGE (V) 



Available Display Formats (DuaT Digits) 



DIGIT 
SIZE 

Bur 



B aiii 



lzi n 



+ io 



OO ,7 



OO rr— 1 
U.U. ^ 



10 mA COMMON 
CATHODE- 
MULTIPLEXED 



10 mA COMMON 
ANODE- 
MULTIPLEXED 



10 mA COMMON 

CATHODE - 

OIRECT 



10 mA COMMON 
ANODE- 
DIRECT 



10 20 30 40 SO 60 
FORWARD CURRENT (mA) 




DEVICES CURRENTLY 


AVAILABLE 


NSN734 


4B 


NSN781 


BR 


NSN782 


BR 


NSN783 


BR. 


NSN784 


BR. 



Physical Dimensions inches (millimeters) 



0.180 



125 
(31.75) 



1.2 
(30.48) 




71/ m 

Ul.btl. 




33 



0.38 



(9.652) 



0.6 



(15.24) 

' Pin 1 as shown, pin out follows counterclockwise 



0.7 
(17.78) 



t 

0.89 
(22.61) 

1 




0.3 





(5.72) 



100 



Available Display Formats (Quad Digits) 



DIGIT FIRST TWO SECOND TWO 

SIZE CODE DIGIT CODE FORMAT DIGIT CODE 




10 mA COMMON 
CATHODE- 
MULTIPLEXED 



10 mA COMMON 
ANODE- 
MULTIPLEXED 



DEVICES CURRENTLY 
AVAILABLE 



NSB7382 +I.U.U.B. 
NSB7881 B.B.B.B. 
NSB7882 B.B.B.B. 



Physical Dimensions inches (millimeters) 



2.39 




0.180 
(4.572) 



mucin 
lih-i.u.u. 





■ 





.7 



0.6 



(17.78) 



t 

0.89 
(22.61) 

\ 




0.3 





(15.24) 



(5.72) 



* Pin 1 as shown, pin out follows counterclockwise 



101 



Connection Tables (Dual Digits) 


Pin 
Number 


NSN734 


NSN781 


NSN782 


NSN783 


NSN784 


1 


NC 


Anode G 


Cathode G 


Anode E 
Digit 1 


Cathode E 
Digit 1 


2 


Cathode J 


Common Cathode 


Common Anode 


NC 


NC 




Digit 1 


Digit 1 


Digit 1 






3 


NC 


Anode E 


Cathode E 


Anode D 
Digit 1 


Cathode D 
Digit 1 


4 


Cathode C 


NC 


NC 


Anode C 


Cathode C 




Digit 1 






Digit 1 


Digit 1 


5 


Common Anode 


NC 


NC 


Common Cathode 


Common Anode 




Digit 1 






Digit 1 


Digit 1 


6 


Cathode DP 


NC 


NC 


Anode DP 


Cathode DP 




Digit 1 






Digit 1 


Digit 1 


7 


NC 


NC 


NC 


NC 


NC 


8 


Cathode E 


NC 


NC 


Anode E 


Cathode E 




Digit 2 






Digit 2 


Digit 2 


9 


Cathode D 


Anode D 


Cathode D 


Anode D 


Cathode D 




Digit 2 






Digit 2 


Digit 2 


10 


Cathode C 


Common Cathode 


Common Anode 


Anode C 


Cathode C 




Digit 2 


Digit 2 


Digit 2 


Digit 2 


Digit 2 


11 


Common Anode 


Anode DP 


Cathode DP 


Common Cathode 


Co/nmon Anode 




Digit 2 






Digit 2 


Digit 2 


12 


Cathode DP 


Anode C 


Cathode C 


Anode DP 


Cathode DP 




Digit 2 






Digit 2 


Digit 2 


13 


Cathode B 


Anode B 


Cathode B 


Anode B 


Cathode B 




Digit 2 






Digit 2 


Digit 2 


14 


Cathode A 


NC 


NC 


Anode A 


Cathode A 




Digit 2 






Digit 2 


Digit 2 


15 


Cathode F 


NC 


NC 


Anode F 


Cathode F 




Digit 2 






Digit 2 


Digit 2 


16 


Cathode G 


NC 


NC 


Anode G 


Cathode G 




Digit 2 






Digit 2 


Digit 2 


17 


NC 


NC 


NC 


NC 


NC 


18 


Cathode G 


Anode A 


Cathode A 


Anode G 


Cathode G 




Digit 1 






Digit 1 


Digit 1 


19 


Cathode B 


NC 


NC 


Anode B 


Cathode B 




Digit 1 






Digit 1 


Digit 1 


20 


NC 


NC 


NC 


Anode A 
Digit 1 


Cathode A 
Digit 1 


21 


Cathode H 
Digit 1 


NC 


NC 


NC 


NC 


22 


NC 


NC 


NC 


Anode F 
Digit 1 


Cathode F 
Digit 1 


23 


NC 


Anode F 


Cathode F 


NC 


NC 


24 




NC 


NC 


















Device 
Type 


Format 


Drive 




NSN734 


<B. 


Common Anode— Direct 






NSN781 


BE. 


Common Cathode— Multiplexed 








NSN782 


B.B. 


Common Anode— Multiplexed 








NSN783 


B.B 


Common Cathode— Direct 








NSN784 


BE. 


Common Anode— Direct 















102 



Connection Tables (Quad Digits) 



Pin 
Number 


NSB7382 


NSB7881 


NSB7882 


1 


NC 


NC 


NC 


2 


Cathode H 
Digit 1 


NC 


NC 


3 


Cathode J 
Digit 1 


NC 


NC 


4 


Common Anode 


Common Cathode 


Common Anode 




Digit 1 


Digit 1 


Digit 1 


5 


Cathode F 


Anode F 


Cathode F 


6 


Common Anode 


Common Cathode 


Common Anode 




Digit 2 


Digit 2 


Digit 2 


7 


Cathode C 


Anode C 


Cathode C 


8 


Cathode DP 


Anode DP 


Cathode DP 


9 


Cathode G 


Anode G 


Cathode G 


10 


Cathode E 


Anode E 


Cathode E 


11 


Common Anode 


Common Cathode 


Common Anode 




Digit 3 


Digit 3 


Digit 3 


12 


Cathode B 


Anode B 


Cathode B 


13 


Cathode A 


Anode A 


Cathode A 


14 


Common Anode 


Common Cathode 


Common Anode 




Digit 4 


Digit 4 


Digit 4 


15 


Cathode D 


Anode D 


Cathode D 



Device 
Type 


Format 


Drive 


NSB7382 
NSB7881 
NSB7882 


4B.B.B 
B.B.B.B 
B.B.B.B. 


Common Anode— Multiplexed 
Common Cathode— Multiplexed 
Common Anode— Multiplexed 



Segment Identification 



•Lhl- 

ill*. 



DP 



103 



Recommended Display Processing 

The multidigit series display is constructed on a stand- 
ard printed circuit board substrate and covered with a 
plastic lens. The edge connector tab will stand a 
temperature of 230 °C for 5 seconds. The display lens 
area must not be elevated in temperature above 70°C.To 
do so will result in permanent damage to the display. 
Since the display is not hermetic, immersion of the entire 
package during flux and clean operations may cause 
condensation of flux or cleaner on the underside of the 
lens. It is recommended that only the edge connectors be 
immersed. Only rosin core solder, solid core solder, and 
low activity organic fluxes are recommended. Cleaning 
solvents are Freon TF, Isopropanol, Methanol, or Ethanol. 
These solvents are recommended only at room 
temperature and for short time periods. The use of other 
solvents or elevated temperature use of the recom- 
mended solvents may cause permanent damage to the 
lens or display. 

Special Formats 

National is constantly adding new formats to its line of 
LED displays. For example: 
NSB7403 Duplex Drive Clock Format. 



Optional Pins 



The standard LED numeric display offers a great deal of 
flexibility in mounting through the use of PCB edge con- 
nections. However, many designers prefer that pins be 
added to the PCB prior to shipping. 

The standard pin used by NSC is outlined below and may 
be ordered by simply adding the designation "Flow 12" to 
the standard part number. Minimum order quantities and 
additional costs are involved, so check with the National 
Sales Office nearest you for more information. 

For a complete discussion of various mounting tech- 
niques, consult the application note on "Mounting Tech- 
niques for Multidigit LED Numeric Displays" AN-170. 



0.030 
(0.762)" 



0.050 
(1.270)" 



MttMl 



0.140 
(3.556) 



0.040 
(1.016) 



TYPICAL LEO DISPLAY 



0.018 
(0.457) 



0.557 
(14.148) 



0.417 
(10.592) 



0.100 

(21401 CENTERS 
TOL NON-ACCUM 



■o 



0.040 
(1.016) 



T .. 



417 



(10.592) 



0.016 
"(0.406) 



All dimensions are in Inches (millimeters) 



104 



Mounting Techniques 
for Multidigit LED 
Numeric Displays 



National Semiconductor 
Application Note 170 
Dick Schubert 
November 1976 




Introduction 

Designed to meet the requirements of a wide range 
of applications, NSC's printed circuit board mounted 
numerics feature: 

• End stackable 2, 4, 5 and 6-digit packages 

• 0.3 , 0.5-, and 0.7-inch digit sizes 

• Common anode and common cathode versions 

• Direct and multiplex drive 

Equally important to all these features is the ease with 
which the designer can interconnect the display to the 
rest of a system. This was a primary design goal for the 
multidigit numerics and it is the purpose of this applica- 
tion note to pass on some of our research to the designer. 
It should be noted that this is not intended to be an 
extensive study, but rather is intended to provide 
direction toward the many possibilities available to the 
designer. 



Electrical and Optical Specifications 

Before treating the problem of mechanical and electrical 
interconnection, a short statement of the basic proper- 
ties of the display is in order. For further details see the 
product data sheet. 

Electrical 

All displays in the multidigit numeric series, whether 
common anode or common cathode, direct drive or 
multiplex, share the same electrical characteristics. 



Forward Voltage, Vf, @ 1 m A 
Reverse Voltage, V r , @ 100 juA 
Digit Light Intensity @ 10 mA 



Min Typ Max Units 

1.7 2.0 V 
3.0 8.0 V 

0.8 1.6 mcd 



The choice between common anode and common 
cathode should merely be a matter of convenience of 
interface to the rest of the electrical design. However, 
the choice between multiplex and direct drive is more 
complex and quite fundamental to any design. It is not 
within the scope of this application note to discuss the 
tradeoffs between direct and multiplex drive except for 
one caution to the designer: when multiplexing, care 
should be exercised to not exceed the peak segment 
current ratings of the device. For example: 

Desired average segment current — 1 5 m A 

Peak current for a 4-digit display: 
4 x 1 5 mA = 60 m A 

Peak current for a 6-digit display: 
6x 15mA = 90mA 

Therefore, for applications requiring more than 75 mA 
peak current when multiplexed, direct drive is suggested. 

Optical Characteristics 

As with the electrical specifications, the multidigit 
numerics all have common optical properties. This 
directly results from the material used and techniques 
of manufacture. 



Characteristic 


Typ 


Units 


Wavelength 


660 


nm 


Spectral Width, Half Intensity 


40 


nm 


Viewing Angle, Off Axis 


60 


degrees 


Intensity (digit) 


1.6 


mcd 


Intensity Matching 


±33 


% 



Contrast enhancement can be achieved by using a lens 
over the display that has a peak transmission point 
centered around 660 nm. 



105 






o 

■c 

E 



Q 
LU 



Mechanical Design 

The principal concern of a mechanical designer when 
"designing in" a display is the functional relationship of 
the display to the design. This relationship is the primary 
factor in determining the means of mechanical support 
and electrical interconnection for the display and varies 
tremendously from one application to another. 

Examples: 

1. TV Channel Indicator - 2 Digits - NSN Dual Series 

Design Constraints: 

1. One display mounted parallel and adjacent to the 
logic board. 



In nearly all cases, more than one answer presents itself, 
at which point the designer must tradeoff mechanical 
and/or electrical considerations with cost. Cost can very 
considerably, ranging from inexpensive pin schemes at 
less than one cent per connection to connectors costing 
over ten cents per connection. 



2. Support to be provided by the interconnection. 






(0 

a> 

3 
Or 



x 



3 
O 



s 




pins available from: 

1 . Precision Concepts 
#6250 

2. Molex 
KK-100 Series 

3. AMP Inc. 
Mod. II 




connectors available from : 

1. Molex 
KK 156 Series 

2. AMP Inc. 
Mod. IV 




106 



2. Cash Register - Two 6-Digit Displays - NSN Dual 

Series 
Design Constraints: 

1. Two sets of 3 dual-digit displays mounted back-to- 
back. 

2. Displays are removed from the immediate vicinity of 
the logic board. 



3. Support does not have to be provided by the connec- 
tion since it can be part of the case design. 

4. Serviceability an important consideration. 



3 



o 
c 

3 



3 

I 

3 

■■■■ 

JQ 

C 
CD 

tn 




Q. 



m 

o 



3 

CD 

3. 
O 



CO 

0) 



available from: 

1 . Barg Electronics 
Mini-Latch - 65039 

2. Molax 
KK-156 Saries 



107 



JS 

Q. 
CO 



o 

■c 
a> 

E 



Q 
111 






3. Digital Voltmeter - 3V2-Digit Display - NSB Multiplex 
Series 

Design Constraints: 

1. One display mounted perpendicular to the logic 
board. 



2. Display support to be provided by the interconnec- 
tion. 

3. The interconnection should use minimum space. 



available from: 

1. Barg Electronic* 
BergStik 

2. AMP Inc. 
Mod. I Header* 



3 

qr 

c 

i 



o 
S 

s 

■ 

Z 
< 




available from 

1. Amphenol 

2. Cinch 




108 



Further Design Examples 



3 



available from: 

1. AMP Inc. 
Printed Circuit Connector 

2. Precision. Concept* 
Mod. #1255 




3 

if 



A 
C 

8 
5 



Q. 
CQ 



m 

o 



available from: 
1. AMP Inc. 

Printed Circuit Connectors 




3 

CD 

3. 
O 

o 

55" 

CO 



109 



Q. 
(0 

■aaiw 

Q 

O 

"C 
0) 

E 



Q 
LU 



■aaiv 



PCB connectors available from 

Molex 

Soldercon Series 



CO 



3 



O) 

c 

■■■■ 

c 

3 

o 



g 



available from: 

1 . Ansley Electronics Corp, 
"Flex Strip" 

2. AMP Inc. 
Jumper Cable Ass'y 



Recommended Display Processing 

The multidigit display is constructed on a standard 
printed circuit board substrate and covered with a plastic 
lens. The edge connector tab will stand a temperature 
of 230°C for 5 seconds. The display lens area must not 
be elevated in temperature above 70°C. To do so will 
result in permanent damage to the display. Since the 
display is not hermetic, immersion of the entire package 
during flux and clean operations may cause condensation 
of flux or cleaner on the underside of the lens. It is 
recommended that only the edge connectors be 
immersed. Only rosin core solder, solid core solder, and 
low activity organic fluxes are recommended. Cleaning 




solvents are Freon TF, isopropanol, methanol, or 
ethanol. These solvents are recommended only at room 
temperature and for short time periods. The use of other 
solvents or elevated temperature use of the recommended 
solvents may cause permanent damage to the lens or 
display. 

This application note is not intended to imply specific 
endorsement or warranty of a manufacturer's product 
by National Semiconductor. In addition, it is not an 
inclusive list of manufacturers, and the designers will by 
research find additional sources and a wide range of 
prices. 



110 




Integrated Displays 



Currently, under development at National is a prod- 
uct line of integrated displays which combines 
state-of-the-art integrated circuits with the latest in 
display/readout devices. 

Three devices are scheduled for release in late 
1979: 

1) Bargraph array with driver 

2) 0.3' display with serial input driver 

3) 0.5' display with serial input driver 

Other devices which are in early planning or layout 
stage are: 

1) Alpha numeric display with decoder/driver 

2) Vu meter display 

3) Other bargraph-with-driver displays 

4) Displays with data-bus compatible drivers 

Details on these and other National products will 
be distributed when available through National's 



sales offices or franchised distributors. 

Following is a brief description of the first three 
products to be introduced: 

1) NSM3914, NSM3915, NSM3916 

The NSM3914 series of 10-element bargraph 
arrays with National's LM3915 or LM3916 
linear integrated circuit as the on-board driver 
is described in the preliminary data sheet on 
the following pages. 

2 ) NSM4000A 

A 0.3 inch, 4 digit array with National's 
MM5450 35-bit, serial-input LED driver as the 
on-board driver (outline drawing shown 
below). 

3 ) NSM4001 

Similar to the NSM4000 but with a 0.5 inch, 
4-digit display (outline drawing shown below). 



OUTLINE DRAWINGS* 




NSM4000A 



* Preliminary data 




»» 


11-tt) 




: 


- 


1 

I1JM 



NSM4001 



111 



gg National 



PRELIMINARY 



Semiconductor 



NSM3914, NSM3915, NSM3916 Series 
End-Stackable LED Bar Graph Array with Driver 



General Description 



The NSM3914, NSM3915, NSM3916 series are functional 
replacements for a variety of conventional meters. Each 
combines a 10-element red LED linear, array and a 
monolithic integrated circuit display driver. The driver cir- 
cuits, similar to the LM3914, LM3915, LM3916 series, light 
successive LEDs as the analog input voltage level in- 
creases past prescaled threshold points. 

The NSM3914 provides a linear analog display, as internal 
threshold points are linearly scaled. A logarithmic 
display is provided by the NSM3915, as threshold points 
are set on 3 dB intervals. The NSM3916 is a variation of 
the logarithmic display; the VU meter function is provid- 
ed by using threshold points at common VU levels. 

The driver circuit contains a stable, adjustable voltage 
reference which precisely sets LED thresholds independ- 
ently of supply voltage. Current drives to the LEDs are 
regulated and programmable, eliminating the need for 
many resistors. The entire display array can operate from 
supply voltages as low as 3V to as high as 24V. The inter- 
nal voltage reference is also connected to an accurate 
10-step voltage divider, supplying reference voltages for 
10 individual comparators. These comparators switch as 
the signal voltage exceeds the established thresholds as 
described above. The typical overall inaccuracy (devia- 
tion from ideal) is typically within 1% for the NSM3914 
and below 1 dB for the RSM3915 and NSM3916. A high im- 
pedance input buffer accepts signals down to ground, yet 



protects against signal inputs of 35V above or below 
ground. A single (mode) pin changes the display from a 
bar graph to a moving dot. Additional information re- 
garding the internal voltage reference, LED current pro- 
gramming mode selection, and application hints are 
given in the LM3914, LM3915, LM3916 data sheets. 

Features 

■ Packages are end-stackable for expanded displays 

■ Can be cascaded to 10 arrays (100 bar graph element) 

■ Linear, logarithmic, and VU meter functions performed 

■ Bar or dot display mode externally selectable by user 

■ LED current programmable from 2 mA to 30 mA 

■ Stable, internal voltage reference for full-scale analog 
inputs from 12V to 12V 

■ Inputs operate down to ground 

■ Signal input withstands 35V without damage or false 
outputs 

Applications 

■ Power meter in stereo systems 

■ S meter in ham and CB radios 

■ VU meter in tape recorders 

■ Process control meters 

■ Replacement for edge meters 



Physical Dimensions and Pin Connections inches (millimeters) 



0JS0 

aiJi) 



T" 



1JM 



mm 
*xm ijw 



n. 



_CL 



n c=d nzn czzi lzzi czn iz=i 1=1 n±n 



XT 



SJSS ^ I 

12 PLACES 

MM 

■"(IJW 
MW 



1.7.13 

(Ml) 



77 



CMS 

(Ut) 



§fiigB^i^iiifi 



'•** DM HOLE, 
<1J»tt PLACES 



(17.1S) 

I.W_ 1.ISS 
* ES *tt.l»)""(27J«)" 
T0L NON-ACCUM 



0.050 
0-1M (\21) 
(3J1) 10 PLACES 



0110 
B.79) 



rzr 



0.1SS 

BJ7) 



MIS 



0.132 
(3.3S) 
O.tSS 

(4.13) 



0.040 

"(1JHI 

MAX 



SJH 

"(LSI) 



PIN 


ELECTRICAL 
CONNECTION 


1 
2 


V LED 
LE0 1 


3 


GND 


4 
5 
6 


V + 

R LO 

Signal In 


7 
8 


R HI 

Reference Out 


9 


Reference Adjust 


10 


Mode 


11 


LED 9 


12 


LED 10 



112 



Absolute Maximum Ratings (Note 3) 

Power Dissipation-Driver (Note 1) 500 mW Signal Input Current 

V+ Voltage 24V (With Overvoltage Applied) ±3mA 
Vipn Voltage 24V Operating Temperature Range o Cto70 o C 
•Input Signal Overvoltage (Note 2) ±35V Storage Temperature Range -20*Cto70'C 
Voltage on Resistor String -100mVtoV+ Lead Temperature (Soldering, 5 seconds) 230 "C 
Reference Load Current 10 mA 

Optical and Electrical Characteristics (Notes 3 and 4) 


Parameter 


Conditions 


Min 


Typ 


Max 


Units 


LED Segment Intensity 


V + = 12.0V, V LED = 4.5V, 
IL REF = 1.0 mA 


0.10 


0.20 




mcd 


LED Intensity Matching 
(All Segments On) 


V IN > 10V, V + = 12.0V, V L ed = 3.0V, 
IL REF = 1.0 mA 




±33 




% 


LED Current/Segment 


V + = 12.0V, V LED = 4.5V, 
IL REF = 1.0 mA 




10 




mA 


Peak Wavelength 






660 




nm 


Voltage Reference Output 


0.10 mA < IL REF < 4.0 mA, 
V + = 12.0V, V LED = 4.5V 


1.2 


1.28 


1.34 


V 


Signal Input Bias Current 






10 


100 


nA 


Supply Current (V + Lead) 


V + =5V to 20V, IL REF = 1.0 mA 




6 


10 


mA 


Absolute Accuracy At Each 
Threshold Point 


NSM3914 


Deviation from Straight Line 
through First and Last Threshold 
Point (Note 5) 


-5 




5 


% 


NSM3915 


V (N = -3 to -18dB(Note6) 


-1 




1.5 


dB 


V IN = - 21 to - 27 dB (Note 6) 


-2 




2 


dB 


NSM3916 


V (N = +3 to -7dB(Note7) 


-1 




1.5 


dB 


V ,, = - 10 to - 20 dB (Note 7) 


-2 




2 


dB 


Note 1: Driver dissipation is given by: P DR = (V LE o - 1.7V) Iled (Total) + (Vy + ) 10 mA where V LE D is the LED supply voltage, 1.7V is the nominal individual 

LED voltage drop and 10 mA is the maximum current of the V + supply. 

Note 2: The addition of a 39k resistor in series with the input signal allows ±100V signals without damage. 

Note 3: Unless otherwise stated, all specifications apply with the following conditions: V + (supply) 3V to 20V; Input signal range 0.015V to (V + - 1.5V) with 

a maximum of 12 Vqq; Comparator divider voltages, same limits; T^ = 25'C; Reference load current, 80 jjA minimum. 

Note 4: The following situations can lead to incorrect operation (a) V|_ed exceeding V + or more than 14V below V + ; (b) signal and comparator voltage 

divider becoming higher than the limits of Note 1; (c) reference load capacitance above 0.05 /iF; (d) reference current loading above 5 mA. 

Note 5: Divider non-linearity is measured with R|_q at 0.000V and Rm at 10.000 Vqq. (At lower divider voltages, buffer and comparator offset voltages may 

add significant error). 

Note 6: Accuracy is measured referred to dB = 10.000 Vqc at signal input, with R|_q at 0.000V and Rm at 10.000 Vqc- (At lower full-scale voltages, buffer 

and comparator offset voltages may add significant error). 

Note 7: Accuracy is measured referred to 3 dB = 10.000 Vqc at signal input, with R LO at 0.000V and Rm at 10.000 Vqc- (At lower full-scale voltages, buffer 

and comparator offset voltages may add significant error). 



113 



Block and Connection Diagram 



"A 
(NOTED 



I 



REF 
OUT 



R B < 
E2)< 



■M 



Rin 



REFERENCE 

VOLTAGE 

SOURCE 

1.2 V 



10 COMPARATORS 10 LEDS 




>* 

>-<- 
£>*■ 



->^ 



^> 



-w- 



<Sleo id 



L 


FROM 
V* LED 9 

* 1 




MODE 

SELECT 

AMPLIFIER 



-A 




VLEO 
(NOTE S) 



TYPICAL RESISTOR 
STRING VALUES 



Resistor 


NSM3914 


NSM3915 


NSM3916 


R1 


1.00k 


1.0k 


0.708k 


R2 


1.00k 


0.41k 


1.531k 


R3 


1.00k 


0.59k 


0.923k 


R4 


1.00k 


0.83k 


0.819k 


R5 


1.00k 


1.17k 


1.031k 


R6 


1.00k 


1.66k 


1.298k 


R7 


1.00k 


2.34k 


0.769k 


R8 


1.00k 


3.31k 


0.864k 


R9 


1.00k 


4.69k 


0.970k 


R10 


1.00k 


6.63k 


1.087k 


Total 


10k 


22.6k 


10k. 



Note 1: Ra determines I|_ed and thus LED brightness: 

25V V FS \ 

"LED=1° ; 

R DIVIDER^ 
Note 2: Rg determines full-scale voltage: 



(1.25V 
Ra 

g dete 



+ Iref^B' where Iref is nominally 



MODE 
(NOTE 4) 



V FS 31.25 
80 (jA. 

Note 3: V+ may be 3V to 20V, additionally, for proper 
operation V + > V L ED. >Vsig + 1-5V, >Vref + 1-5V. 
Note 4: Mode controls type of display. Connect to LED 9 
for dot display and to V + for bar display. 

Note 5: VleD ma y ^ 3V— 20V (see Note 3). V^ED mav oe 
limited by the driver circuit dissipation rating. 



«i 



Recommended Display Processing 

The NSM3914, NSM3915, NSM3916 are constructed on a 
standard printed circuit board substrate and covered 
with a plastic lens. The edge connector tab will stand 
230 "C for 5 seconds. Permanent damage to the display 
will result if lens temperature exceeds 70 "C. Since the 
display is not hermetic, immersion of the entire package 
during flux and clean operation may cause condensation 
of flux or cleaner on the underside of the lens. Only the 
edge connectors should be immersed. 



Rosin core solder, solid core solder, and low activity 
organic fluxes are recommended. Freon TF, Isopropanol, 
Methanol or Ethanol solvents are recommended only at 
room temperature and for short periods. The use of other 
solvents or elevated temperature use of the recom- 
mended solvents may cause permanent damage to the 
lens or display. 



114 



Typical Applications 



C/> 



Linear Bar Graph (5V Full-Scale) 



7.0V ►- 



NC NC NC 

? ? y 




LED LED LED MODE V + V LE0 
1 9 10 



REF REF 
SIG V- "LP R HI OUT ADJ 




Logarithmic Audio Dot Graph 
(10V Full-Scale) 



. 12V 5V 

mil 



LED LED LED MODE V+ V LED 
1 9 10 



REF REF 
SIG V- R L0 B HI OUT ADJ 



lilli" 

r-iov -L , 

GNAL "ST >S20 

OR DC S 



ov 

SIGNAL 
AC OR DC 



20-Segment Linear Dot Graph (25V Full-Scale) 



i 



? r? \ w T- 4 m n 

J^ ^ 1 in icn ten unnc u+ v. » 



LED LED LED MODE v+ V LED 
I 9 10 

NSM3914 (LEDS 1-10) 

REF REF 
SIG V- R LO " HI OUT ADJ 




LED LED LED MODE V+ V LED 
1 9 10 

NSM3914 (LEDS 11-20) 

REF REF 
SIG V- R LO R HI OUT ADJ 



T 




0V-2.5V 
SIGNAL 



Logarithmic (NSM3915) or VU (NSM3916) Audio Bar Graph 



11.8V-1 
NC NC NC I T 

Mitt 



LED LED LED MODE V + V LED 
1 9 10 

NSM391S OR NSM3916 

REF REF 
SIG V- R lO R HI OUT ADJ 




10 /iF 




OPTIONAL CIRCUIT FOR 
PEAK DETECTOR 



C/> 



en 

Z 
0) 



9 

3. 
CD 



115 



ggj National 



Semiconductor 



NSM4000A LED Display with Driver 



General Description 



The NSM4000A is a 4-digit 03" height LED display with a 
serial data-in/parallel data-out LED driver designed to 
operate with minimal interface to the data source. Cur- 
rent drive to the LEDs is programmable by setting a 
reference current to a single pin. 



Enable 

TTL compatible 

Wide power supply operation 

Direct current drive (non-multiplexed) 



Features 

■ Four 0.3" digits with right-hand decimal points 

■ Outputs available for two external LEDs 

■ LED current is programmable 

■ Serial data input 



Applications 



COPs or microprocessor display 

Digital clock, thermometer, counter, voltmeter 

Instrumentation readouts 



Block Diagram 



NSM4000A 



0.001 tif - 0.01 aiF 



CLOCK 



Vled 



I 




, '111' , IZI 3 IZI , O 
'IjLh'U. '/_/. 4 /_/. 



I 



I 



LED DISPLAY 



35 OUTPUT BUFFERS 



35 LATCHES 



35-BIT SHIFT REGISTER 



tfr 



I 



I 



l_r 



. ,\. 



LOAD 



W 1 

EXTERNAL 
LEDs 



RESET 



FIGURE 1 



116 



Absolute Maximum Ratings 

Power Dissipation-Driver (Note 1) 660 mW 

Voltage at Any Pin {Figure 1 For V LED ) 12V 

Operating Temperature - 20 °C to 70 °C 

Storage Temperature -20°Cto70°C 

Lead Temperature (Soldering, 5 seconds) 230 °C 



0) 



Optical and Electrical Characteristics (25 »c Note 2) 



Parameter 



LED Segment Intensity 



LED Intensity Matching 



LED Current/Segment 



Peak Wavelength 



V DD Supply Current 



Input Voltages 



Logical "0" Level 



Logical "1" Level 



Brightness Input 



Input Clock Frequency 



Duty Cycle 



Conditions 



V L ED = 3V, l B R.CONT. = 400 M A 



V LED = 3V, l B R.CONT. = 400 M A 



•br.cont. = 400mA 



4.75V < V DD < 5.25V 



V OD >5.25V 



Mln 



0.10 



-0.3 



2.2 



Vnn-2 



40 



Typ 



0.20 



±33 



10 



660 



50 



Max 



0.8 



'DP 



'DD 



600 



0.5 



60 



Units 



mcd 



mA 



mA 



mA 



MHz 



% 



Not* 1: Driver dissipation is given by P DR = (V LED - 1.7V)l LED( Total®25*C) + < V DD> 7mA where V LE d is the LED supply voltage, 1.7V is the nominal LED 
voltage drop, and 7 mA is the maximum current of the Vqd supply. 

Note 2: Unless otherwise stated, all specifications apply with the following conditions: V DD (supply) 4.75V to 11V, V LED (supply) as described in Figure 3, 
and brightness input 200 hA to 600 mA. 



IV 

15 

10 

5 



































200 400 600 

'BRCONT.OiA) 



800 



FIGURE 2. Typical LED Element Currant 
vs Applied Brightness Control Current 

Functional Description 

Serial data transfer from the data source to the display 
driver is accomplished with three signals: data input, 
data enable, and clock. The data format consists of a 
leading "1" followed by 35 data bits. This allows data 
transfer without an additional load signal. The 35 data 
bits are latched after the 36th bit is complete, thus pro- 
viding non-multiplexed direct drive to the display. Out- 
puts change only if the serial data bits differ from the 
previous time. 




5 10 15 20 
l LED /ELEMENT«25°C(niA) 

FIGURE 3. LED Supply Voltage Range 



A block diagram is shown in Figure 1, and Figures 4 and 5 
show the timing relationships and input data format. The 
start bit precedes the 35 data bits. At the 36th clock, a 
LOAD signal is generated synchronously with the high 
state of the clock, which loads the 35 bits in the shift 
registers into the latches. At the low state of the clock, a 
RESET signal is generated which clears all the shift 
registers for the next set of data. The shift registers are 
static master-slave configuration. There is no clear for 



117 



the master portion of the first shift register, thus allowing ment and digit designations are given in the block 
continuous operation. diagram of Figure 7). The bit sequence for all segments is 


i< it. i i • ^ * l. i * shown in Table 1. 
If the clock is not continuous, there must be a complete 

set of 36 clocks, otherwise the shift registers will not The LED element current is typically 25 times greater 

clear. than the current into the brightness control pin as shown 

... ~ *.. 'm Figure 2. Relationship of the LED current to UED sup- 
When the chips first powers ON, an internal power ON , yo|t js shown jn fj 3 

reset signal is generated which resets all registers and 

all latches. The START bit and the first clock return the A capacitor should be connected from the brightness 

chip to its normal operation. control pin to the ground pin to prevent oscillations. 


Bit 1 is the first bit following the start bit and determines 
the drive current state of segment A of digit 1 (note: seg- 






CLOCK / 


\ 
















DATA X 






-~ 




- — 300 ns 








\ 


MIN 




DATA ENABLE 








— 100 ns 
MIN 




FIGURE 4. Timing Relationships 


36 1 




BIT 35 


v/mmzm 


BIT1 START 






I fc^^^ 


m i 


















ENABLE | 


1 




LOAD I— i 

(INTERNAL* 1 1 


RESET f— 1 

(INTFRNAI ) 1 L 






FIGURE 5. Input Data Format 


TABLE 1. SERIAL INPUT SEQUENCE 


Bit # 


Digit # 


Segment 


Bit # 


Digit « 


■ Segment 


1 




A 


18 


3 


B 


2 




B 


19 


3 


C 


3 




C 


20 


3 


D 


4 




D 


21 


3 


E 


5 




E 


22 


3 


F 


6 




F 


23 


3 


G 


7 




G 


24 


3 


DP 


8 




DP 


25 


4 


A 


9 


2 


A 


26 


4 


B 


10 


2 


B 


27 


4 


C 


11 


2 


C 


28 


4 


D 


12 


2 


D 


29 


4 


E 


13 


2 


E 


30 


4 


F 


14 


2 


F 


31 


4 


G 


15 


2 


G 


32 


4 


DP 


16 


2 


DP 


33 


— . 


LED 1 


17 


3 


A 


34 




LED 2 



118 



Physical Dimensions and Pin Connections inches (millimeters) 



(/> 




Pin 


Electrical 
Connection 


1 


External LEO 1 


2 


External LED 2 


3 


Enable In 


4 


Data In 


5 


Clock In 


6 
7 
8 


VDD 

Brightness Control 

Gnd 


9 


V L ED 



Recommended Display Processing 

The NSM4000A is constructed on a standard printed cir- 
cuit board substrate and covered with a plastic lens. The 
edge connector tab will stand 230 °C for 5 seconds. Per- 
manent damage to the display will result if lens 
temperature exceeds 70 S C. Since the display is not 
hermetic, immersion of the entire package during flux 
and clean operation may cause condensation of flux or 
cleaner on the underside of the lens. Only the edge con- 
nectors should be immersed. 



Rosin core solder, solid core solder, and low activity 
organic fluxes are recommended. Freon TF, Isopropanol, 
Methanol or Ethanol solvents are recommended only at 
room temperature and for short periods. The use of other 
solvents or elevated temperature use of the recommend- 
ed solvents may cause permanent damage to the lens or 
display. 



119 




Interface 



User Guide—Array Drivers 



# Digits 



2 
3 

6 

8 

9 

12 

14 



TTL Drivers 



Segment 



DS8669 
DS8858 (Note 1) 

DS8858 (Note 1) 

DS8858 (Note 1) 

DS8858 (Note 1) 

DS8858 (Note 1) 

DS8858 (Note 1) 



Digit 



DS8859 (Note 2) 
same 
two of same 
two of same 
two of same 
three of same 



MOS Drivers 



Segment 



DS8867 
DS75493 

DS8867 
DS75493 

DS8867 
DS75493 

DS8867 
DS75493 



or two 
(Note 1) 

or two 
(Note 1) 

or two 
(Note 1) 

or two 
(Note 1) 



DS8867 or two 
DS75493 (Note 1) 

DS8867 or two 
DS75493 (Note 1) 



Digit 



DS8877 (Note 5) 

same 
DS8871 (Note 3) 
DS8872/3 (Note 4) 

DS8865 

DS8865 



Not* 1: DS8858 is a 7-segment driver, DS8867 drives 8 segments, and DS75493 drives 4 segments. 

Note 2: DS8859 (non-inverting) and DS8869 (inverting) have hex latches which may be disabled by permanently keeping STROBE low. 

Note 3: DS8863 may also be used. 

Note 4: DS8873 has a low-battery indicator. DS8973, 4, 5, 6 and 8 are special 9-digit drivers for battery operation. 

Note 5: The DS8877 (5-50 mA) may be replaced by DS8892 (200 mA) or DS75492 (250 mA). Also, the DS75491 (quad) can source or sink 

up to 50 mA, and can therefore be used as either a digit driver or segment driver (the latter undecoded, however). 



User Guide— Display Drivers 

SEGMENT DRIVERS— DIRECT OR STROBED 

Common Cathode 

DS8858(TTL) 

MM74C48 or CD4511 (CMOS) 

To interface PMOS to CMOS or TTL, use buffers (inverting and non-inverting) MM74C901-904. 

Use external transistors for heavier drive requirements. 

Common Anode 

DM7446A (TTL) 
DM7447A (TTL) 
Above comments concerning buffers and external transistors apply. 

Note: These are all decoded segment drivers. For non-decoded applications, See 1978 Interface Databook. 

DIGIT DRIVERS 

External NPN (common cathode) or PNP (common anode) transistors of proper V CE (sat), breakdown, and 
current capability may be used. PNP core-driver array DH3467C (4 per package) and DS8692 (8 NPN's per 
package), rated at 1A and 0.5A (respectively) each transistor, may be economical. A variety of suitable com- 
mon cathode digit drivers is listed in the 1978 Interface Databook. 



121 



$£1 National 

£A Semiconductor 

ADD3501 3 1 / 2 Digit DVM with Multiplexed 7-Segment 
Output 



General Description 



The ADD3501 (MM74C935-1) monolithic DVM circuit 
is manufactured using standard complementary MOS 
(CMOS) technology. A pulse modulation analog-to- 
digital conversion technique is used and requires no 
external precision components. In addition, this tech- 
nique allows the use of a reference voltage that is the 
same polarity as the input voltage. 

One 5V (TTL) power supply is required. Operating with 
an isolated supply allows the conversion of positive as 
well as negative voltages. The sign of the input voltage 
is automatically determined and output on the sign pin. 
If the power supply is not isolated, only one polarity of 
voltage may be converted. 

The conversion rate is set by an internal oscillator. The 
frequency of the oscillator can be set by an external RC 
network or the oscillator can be driven from an external 
frequency source. When using the external RC network, 
a square wave output is available. It is important to note 
that great care has been taken to synchronize digit 
multiplexing with the A/D conversion timing to elimi- 
nate noise due to power supply transients. 

The ADD3501 has been designed to drive 7-segment 
multiplexed LED displays directly with the aid of 
external digit buffers and segment resistors. Under 
condition of overrange, the overflow output will go high 
and the display will read +OFL or -OFL, depending on 
whether the input voltage is positive or negative. In 
addition to this, the most significant digit is blanked 
when zero. 

A start conversion input and a conversion complete 
output are included on all 4 versions of this product. 



Features 

■ Operates from single 5V supply 

■ Converts OV to ± 1.999V 

■ Multiplexed 7-segment 

■ Drives segments directly 

■ No external precision component necessary 

■ Accuracy specified over Temperature 

■ Medium speed - 200ms/conversion 

■ Internal clock set with RC network or driven 
externally 

■ Overrange indicated by +OF Lor -OFL display reading 
and OFLO output 

■ Analog inputs in applications shown can withstand 
±200 Volts 



Applications 

■ Low cost digital power supply readouts 
" Low cost digital multimeters 

■ Low cost digital panel meters 

■ Eliminate analog multiplexing by using remote A/D 
converters 

■ Convert analog transducers (temperature, pressure, 
displacement, etc.) to digital transducers 



Connection Diagram 



vcc — 


1 




28 


— Se 


ANALOG Vcc — 


2 




27 


— Sf 


Sd — 


3 




26 


— h 


Sc — 


4 




25 


— GND 


Sb — 


S 




24 


— DIGIT 1 (MSO) 


s,— 


6 




23 


— DIGIT 2 


OFLO — 


7 


ADD3S01 


22 


— DIGIT 3 


CONVERSION COMPLETE — 


1 




21 


— 0IGIT4US0I 


START CONVERSION 


9 




20 


— 'OUT 


SIGN — 


10 




19 


— <IN 


VFILTER — 


11 




18 


— VREF 


V|«|<-> — 


12 




17 


— SW1 


V|N< + > — 


13 




16 


SW2 


VFB — 


14 




15 


ANALOG GND 



122 



OT National 

£2 Semiconductor 

ADD3701 3% Digit DVM with 
Multiplexed 7-Segment Output 

General Description 

The ADD3701 (MM74C936-1) monolithic DVM circuit 
is manufactured using standard complementary MOS 
(CMOS) technology. A pulse modulation analog-to-digital 
conversion technique is used and requires no external 
precision components. In addition, this technique allows 
the use of a reference voltage that is the same polarity 
as the input voltage. 

One 5 V (TTL) power supply is required. Operating with 
an isolated supply allows the conversion of positive as 
well as negative voltages. The sign of the input voltage 
is automatically determined and output on the sign pin. 
If the power supply is not isolated, only one polarity of 
voltage may be converted. 

The conversion rate is set by an internal oscillator. The 
frequency of the oscillator can be set by an external RC 
network or the oscillator can be driven from an external 
frequency source. When using the external RC network, 
a square wave output is available. It is important to note 
that great care has been taken to synchronize digit 
multiplexing with the A/D conversion timing to elimi- 
nate noise due to power supply transients. 

The ADD3701 has been designed to drive 7-segment 
multiplexed LED displays directly with the aid of 
external digit buffers and segment resistors. Under 
condition of overrange, the overflow output will go high 
and the display will read +OFL or -OFL, depending on 
whether the input voltage is positive or negative. In 
addition to this, the most significant digit is blanked 
when zero. 

A start conversion input and a conversion complete 
output are included. 



> 

o 
a 

CO 

3 



Features 

■ Operates from single 5 V supply 

■ Converts to ±3999 counts 

■ Multiplexed 7-segment 

■ Drives segments directly 

■ No external precision components necessary 

■ Accuracy specified over temperature 

■ Medium speed — 400 ms/conversion 

■ Internal clock set with RC network or driven ex- 
ternally 

■ Overrange indicated by +OFLor-OFLdisplay reading 
and OF LO output 

■ Analog inputs in applications shown can withstand 
±200 Volts 



Applications 



Low cost digital power supply readouts 

Low cost digital multimeters 

Low cost digital panel meters 

Eliminate analog multiplexing by using remote A/D 

converters 

Convert analog transducers (temperature, pressure, 

displacement, etc.) to digital transducers 

Indicators and displays requiring readout up to 3999 

counts 



Connection Diagram (Top view) 





Dual- 


In-Line 


Package 




VCC 


1 






28 


Se 


ANALOG Vcc 


2 






27 


Sf 


Sd — 


3 






26 


— h 


Sc 


4 






25 


— GND 


Sb — 


5 






24 


DIGIT KMS0) 


s, — 


6 






23 


— DIGIT 2 


0FL0-— 


7 






22 


— DIGIT 3 


CONVERSION COMPLETE 


8 


ADD3701 


21 


— DIGIT 4 (LSD) 


START CONVERSION — 


9 






20 


—'OUT 


SIGN — 


10 






19 


«IN 


vfilter — 


11 






18 


VREF 


VlN(-) 


12 






17 


— SW1 


vinW — 


13 






16 


SW2 


vfb— 


14 






15 


— ANALOG GNO 



Order Number ADD3701CCN 



123 



yWA National 

4lA Semiconductor 

CD4511BM/CD4511BC BCD-to-7 Segment 
Latch/Decoder/Driver 



General Description 

The CD451 1 BM/CD451 1 BC BCD-to-seven segment latch/ 
decoder/ driver is constructed with complementary MOS 
(CMOS) enhancement mode devices and NPN bipolar 
output drivers in a single monolithic structure. The circuit 
provides the functions of a 4-bit storage latch, an 8421 
BCD-to-seven segment decoder, and an output drive 
capability. Lamp test (LT), blanking (Bl), and latch 
enable (LE) inputs are used to test the display, to 
turn-off or pulse modulate the brightness of the display, 
and to store a BCD code, respectively. It can be used 
with seven-segment light emitting diodes (LED), incan- 
descent, fluorescent, gas discharge, or liquid crystal 
readouts either directly or indirectly. 

Applications include instrument (e.g., counter, DVM, 
etc.) display driver, computer/calculator display driver, 
cockpit display driver, and various clock, watch, and 
timer uses. 



Features 

■ Low logic circuit power dissipation 

■ High current sourcing outputs (up to 25 mA) 

■ Latch storage of code 

■ Blanking input 

■ Lamp test provision 

■ Readout blanking on all illegal input combinations 

■ Lamp intensity modulation capability 

■ Time share (multiplexing) facility 

■ Equivalent to Motorola MC14511 



Connection Diagram 



Truth Tables 



■ — 


U 


JL 


c — 




IS 


Cr-i 




14 


S — 




13 
1? 


IE — 
— 




11 


A — 




— 


v»— 




i_ 



Display 



IZBHSblBR 



• 12 3 4 5 6 7 11 



Segment Identification 



■llh 

■u- 



INPUTS 


OUTPUTS 


LE 


Bl 


LT 


D 


c 


B 


A 


■ 


b 


c 


d 


• f I 


DISPLAY 


X 


X 





X 


X 


X 


X 


1 


1 


1 


1 


1 1 1 


8 


X 







X 


X 


X 


X 






































1 


1 


1 


1 


i i b 





















1 





1 


1 








1 















1 





1 


1 





1 


1 1 


2 















1 


1 


1 


1 


1 


1 


1 


3 












1 











1 


1 





1 1 


4 












1 


o- 


1 


1 





1 


1 


1 1 


5 












1 


1 











1 


1 


1 1 1 


6 












1 


1 


1 


1 


1 


1 








7 









1 











1 


1 


1 


1 


1 1 1 


8 









1 








1 


1 


1 


1 





1 1 


9 









1 





1 





























1 





1 


1 


























1 


1 
































1 


1 





1 


























1 


1 


1 
























1 






1 

X 


1 

X 


1 

X 


1 

X 

















• 



X - Don't car* 

'DapwKfc upon tr» BCD cod* applied during the t 



124 



OT National 

Km Semiconductor 

DM54/DM7446A, 47A, LS47, 48, LS48, LS49 
BCD/7-Segment Decoders/Drivers 



General Description 

The 46A, 47A and LS47 feature active-low outputs 
designed for driving common-anode LED's or incan- 
descent indicators directly; and the 48, LS48 and LS49 
feature active-high outputs for driving lamp buffers or 
common-cathode LED's. All of the circuits except the 
LS49 have full ripple-blanking input/output controls 
and a lamp test input. The LS49 features a direct 
blanking input. Segment identification and resultant 
displays are shown on a following page. Display patterns 
for BCD input counts above nine are unique symbols 
to authenticate input conditions. 

All of the circuits except the LS49 incorporate auto- 
matic leading and/or trailing-edge, zero-blanking control 
(RBI and RBO). Lamp test (LT) of these devices may 
be performed at any time when the BI/RBO node is at 
a high logic level. All types (including LS49) contain 
an overriding blanking input (Bl) which can be used 
to control the lamp intensity (by pulsing), or to inhibit 
the outputs. 



Features 

■ All circuit types feature lamp intensity modulation 
capability 

5446A/7446A, 5447A/7447A. 54LS47/74LS47 

■ Open-collector outputs drive indicators directly 

■ Lamp-test provision 

■ Leading/trailing zero suppression 

5448/7448, 54LS48/74LS48 

■ Internal pull-ups eliminate need for external resistors 

■ Lamp-test provision 

■ Leading/trailing zero suppression 

54LS49/74LS49 

■ Open-collector outputs 

■ Blanking input 



a 
3 

-4 



> 



2 



TYPE 


DRIVER OUTPUTS 


TYPICAL 
POWER 


PACKAGES 


ACTIVE 


OUTPUT 


SINK 


MAX 




LEVEL 


CONFIGURATION 


CURRENT 


VOLTAGE 


DISSIPATION 




DM5446A 


low 


open-collector 


40 mA 


30V 


320 mW 


J, N,W 


0M5447A 


low 


open-collector 


40 mA 


15V 


320 mW 


J, N,W 


DM5448 


high 


2-kft pull-up 


6.4 mA 


5.5V 


265 mW 


J, N,W 


DM54LS47 


low 


open-collector 


12 mA 


15V 


35 mW 


J.N.W 


DM54 LS48 


high 


2 kI2 pull-up 


2 mA 


5.5V 


125mW 


J, N.W 


DM54LS49 


high 


open-collector 


4 mA 


5.5V 


40 mW 


J.N.W 


DM7446A 


low 


open-collector 


40 mA 


30V 


320 mW 


J, N.W 


DM7447A 


low 


open-collector 


40 mA 


15V 


320 mW 


J.N.W 


DM7448 


high 


2-kJ2 pull-up 


6.4 mA 


5.5V 


265 mW 


J.N.W 


DM74LS47 


low 


open-collector 


24 mA 


15V 


35 mW 


J.N.W 


DM74LS48 


high 


2 \Si pull-up 


6 mA 


5.5V 


125 mW 


J, N.W 


DM74LS49 


high 


open-collector 


8 mA 


5.5V 


40 mW 


J, N,W 



Connection Diagrams 



Vcc < I • b c d • Vcc f I « b c d t Vccf I a b c d 



TEST 



INPUTS 



5446A/7446A(J), (N), <W); 
5447 A/7447 AM), <N), (W); 
54LS47/74LS47(J), (N), (W) 



I 


16 




IS 


14 


13 


12 


11 


10 




9 




i 


^ t 


i i 


\ i 


i t 


J i 


\ 












> 






< 


3 < 


p < 


3 










1 

1 




2 


3 

IIP 61/1 


4 
HBO R 


S 

II 


6 

1 


1 


6 


ID 



LAMP BI/RBO RBI 
TEST 



6N0 



INPUTS '"' INPUTS 

S448/7448(J), (N). (W); 
54LS48/74LS48(J), (N), (W) 



1« 




13 


12 


11 


10 


9 




8 






























< 


p 










1 

1 




2 

L 1 


3 

1 


4 

I 


5 


6 


Gl 


1 

no 



INPUTS INPUTS OUTPUT 

54LS49/74LS49(J), (N), (W) 



125 



VW\ National 

KM Semiconductor 



DS75491 MOS-to-LED Quad Segment Driver 
DS75492 MOS-to-LED Hex Digit Driver 



General Description 

The DS75491 and DS75492 are interface circuits 
designed to be used in conjunction with MOS 
integrated circuits and common-cathode LED's in 
serially addressed multi-digit displays. The num- 
ber of drivers required for this time-multiplexed 
system is minimized as a result of the segment- 
address-and-digit-scan method of LED drive. 



Features 

■ 50 mA source or sink capability 
per driver (DS75491) 

■ 250 mA sink capability 
per driver (DS75492) 

■ MOS compatability (low input current) 

■ Low standby power 

■ High-gain Darlington circuits 



Schematic and Connection Diagrams 



DS75491 (each driver) 




DS75492 (each driver) 



Y 
Id. 1 1. 1. ». 



DS75491 Dual-ln-Line Package 

4A 4E 4C V m 3C 3E 3* 

13 It 111 l| 



Si S 



IE ' 1C 6N0 

TOP VIEW 




DS75492 Dual-ln-Line Package 

6Y 6A V K SA SY 4A 

13 12 111 It 



SND 
TOP VIEW 



Order Number DS75491N 
or DS75492N 



126 



OT National 

Jlm Semiconductor 



DS55493/DS75493 Quad LED Segment Driver 



General Description 

The DS55493/DS75493 is a quad LED segment driver. 
It is designed to interface between MOS IC's and LED's. 
An external resistor is required for each segment to 
drive the output current which is approximately equal 
to 0.7V/R L and is relatively constant, independent of 
supply variations. Blanking can be achieved by taking 
the chip enable (CE) to a logical "1" level. 



Features 

■ Low voltage operation 

■ Low input current for MOS compatibility 

■ Low standby power 

■ Display blanking capability 

■ Output current regulation 

■ Quad high gain circuits 



Schematic and Connection Diagrams 



R«T 



Dual-ln-Line Package 

'OUT4 IN 4 IN 3 



Rs£T 




Order Number DS55493J, DS75493J 
or DS75493N 



Typical Application 



Truth Table 




CE 


V,N 


■out 





1 


1 


X 


ON 

OFF 

OFF 



X " Don't care 



DS7MM OIGIT DRIVER 



127 



Egl National 

4KA Semiconductor 



DS8669 2-Digit BCD-to-7-Segment Decoder/Driver 



General Description 



The DS8669 is a 2-digit BCD to 7-segment decoder/ 
driver for use with common anode LED displays. The 
DS8669 drives 2 7-segment LED displays without 
multiplexing. Outputs are open-collector, and capable 
of sinking 25 mA/segment. Applications consist of TV 
and CB channel displays. 



Features 

■ Direct 7-segment drive 

■ 25 mA/segment current sink capability 

■ Low power requirement— 16 mA typ 

■ Very low input currents— 2 juA typ 

■ Input clamp diodes to both Vcc and ground 

■ No multiplexing oscillator noise 



Logic and Connection Diagrams 



Dual-ln-Line Package 



BCD 
INPUTS 



BCD 
INPUTS 



A1 








— al 

— bl 




B1 — 








— cl 






DECODER 




DRIVERS 


— dl 


7-SEGMENT 
' OUTPUTS 


CI — 








— el 

— fl 




D1 — 








— a2 




A2 — 
















— b2 




B2 — 








— c2 






DECODER 




DRIVERS 


— d2 


7-SEGMENT 
' OUTPUTS 


C2 — 








— e2 
f2 




D2 — 








fl2 





GND 



Al 



B1 



CI- 



Dl 



10 



12 



XJ 



24 



23 



22 



A2 



B2 



C2 



21 



20 



19 



18 



17 



16 



15 



14 



D2 



a2 



b2 



c2 



d2 



92 



r^-vcc 



TOP VIEW 
Order Number DS8669N 



128 



OT National 

£A Semiconductor 

DS8692, DS8693, DS8694 
Printing Calculator Interface Set 



General Description 

Two DS8692 IC's and one each of the DS8693 and 
DS8694 provide the complete interface necessary 
between the MM5787 calculator chip and the Seiko 
Model 310 printing head. The DS8692 is an array of 
eight common emitter output transistors each capable 
of sinking 350 mA, with open collector saturating 
outputs. The DS8693 contains the interface logic for 
the color solenoid driver, motor driver, and 7-column 
character select solenoid drivers. The DS8694 contains 
the interface logic for 8-column solenoid drivers plus 
the clock oscillator and timing signal buffer. The color 
and character select solenoid latch outputs of both are 



Connection Diagrams 



Dual-ln-Line Package 

CI M 17 C7 NC C6 88 IS CS 



y 



K y 



\ 



K 



< >i 



r< 



CI II 12 C2 NC C3 13 M C4 
TOP VIEW 

Order Number DS8692N 



constant current outputs supplying the base current 
for the DS8692 arrays. These outputs also feature active 
pull-down. The motor drive latch output is an open 
collector capable of sinking 20 mA. 



Features 

■ Provides complete interface package for printing 
calculators with minimum number of packages and 
minimum number of external components 

■ 350 mA sink capability 



Dual-ln-Line Package 



COLUMN IATCH 



VCC OUT 1 OUT 2 OUT 3 OUT* OUTS OUT! OUT 7 OUT OUT STOP 



|22 1 21 20 _t9 

TrP 1 

TrCH 



rQ* 



rO 1 



rtH 



** 



INI IN 2 IN 3 IN 4 INS INC IN 7 COLOR CIK PRINT GNO 



TOP VIEW 

Order Number DS8693N 



Dual-ln-Line Package 

COLUMN LATCH 
, » » TIMING 

VCC OUT I OUT 2 OUT 3 OUT 40UTS OUT t OUT 7 OUT I IN OSC C OSC R 



|24 1 23 22 

{Jo" 

TrCP 



iO J 

JlIffiEs 




TOP VIEW 

Order Number OS8694N 



129 



s 



3 

R 

CO 
Q 

NT 



gg| National 



Semiconductor 

DS7856/DS8856, DS8857, DS7858/DS8858 
BCD-to-7-Segment LED Drivers 

General Description 



This series of 7-segment display drivers fulfills a 
wide variety of requirements for most active high 
(common cathode) Light Emitting Diodes (LEDs). 
Each device fully decodes a 4-bit BCD input into 
a number from through 9 in the standard 7- 
segment display format and BCD numbers above 
9 into unique patterns that verify operation. All 
circuits operate off of a single 5.0V supply. 

The DS7856/DS8856 has active-high, passive pull- 
up outputs which provide a typical source current 
of 6.0 mA at an output voltage of 1.7V. The 
applications are the same as for the DM5448/ 
DM7448 except that more design freedom is 
allowed with higher source current levels. This 
circuit was designed to drive the MAN-4 or equiv- 
alent type display directly without the use of 
external current limit resistors, and replaces the 
MSD101. 

The DS8857 has active-high outputs and is de- 
signed to be used with common cathode LED's 
in the multiplex mode. It provides a typical source 
current of 50 mA at an output voltage of 2.3V. 



In addition, with the use of an external current 
limit resistor per segment, this circuit can be used 
in higher current non-multiplex LED applications. 
It replaces the MSD102. 

The DS7858/DS8858 has active high outputs 
with source current adjustable with the use of 
external current limit resistors, one per segment. 
This feature allows extreme flexibility in source 
current value selection for either multiplex or 
non-multiplex common cathode LED drive applica- 
tions. It allows the system designer freedom to tailor 
the drive current for his particular applications. 

Features 

■ Lamp-test input 

■ Leading/trailing zero suppression (RBI and 
RBO) 

■ Blanking input that may be used to modulate 
lamp intensity or inhibit output 

■ TTL and DTL compatible 

■ Input clamping diodes 



Connection Diagram 



Dual-ln-Line Package 



I" l» I" I " I" I" I" l» 



I' I' I' I' I' I' I' |' 



Order Number DS7856J, DS8856J, 
DS8857J, DS7858J, DS8858J 



Order Number OS8856N 
or DS8858N 



Order Number DS7856W 
or DS7858W 



Output Display 



3 



■0 leBMBblBNohMEt 



ICSHENT IDENTIFICATION I 



12 13 14 II 



NUMERICAL DESIGNATIONS - RESULTANT DISPLAYS 



130 



KB] National 

£A Semiconductor 

DS8859, DS8869 Open Collector Hex Latch LED Drivers 



General Description 



The DS8859, DS8869 are TTL compatible open collector 
hex latch LED drivers with programmable current sink 
outputs. The current sinks are nominally set at 20 mA 
but may be adjusted by external resistors for any value 
between 0-40 mA. Each device contains six latches 
which may be set by input data terminals. An active 
low strobe common to all six latches enables the data 
input terminals. The DS8859 current sink outputs are 
switched on by entering a high level into the latches and 
the DS8869 current sink outputs are switched on by 
entering a low level into the latches. 



The devices are available in either a molded or cavity 
package. In order not to damage the devices there is a 
limit placed on the power dissipation allowable for each 
package type. This information is shown in the graph 
included in this data sheet. 

Features 

■ Built-in latch 

■ Programmable output current 

■ TTL compatible inputs 

■ 40 mA output sink 



Logic Diagram 



Output Circuit 



DS8859 



£>-©-*■ 




TO OTHER 
LATCHES 




Connection Diagram 

Dual-ln-Line Package 

Vcc <*bj l""T 1 OUTPUT 1 INPUT 1 OUTPUT I INPUT 3 OUTPUT 3 

In l» I m In 1« l» mi n 



Truth Table 




COMMON 
STROBE 


INPUT 
DATA 


DS8859 
OUTPUT 

(t+1) 


DS8869 
OUTPUT 

(t+1) 





1 



1 
X 


OFF 

ON 

OUTPUT (t) 


ON 

OFF 

OUTPUT (t) 



STBOIE INPUT I OUTPUT I INPUTS OUTPUTS INPUT 4 OUTPUT 4 6ND 



TOP VIEW 

Order Number DS8859J, DS8869J 
or DS8859N, DS8869N 



131 



CO 



5jH National 



Semiconductor 



DS8861 MOS-to-LED 5-Segment Driver 
DS8863 MOS-to-LED 8-Digit Driver 
DS8963 MOS-to-LED 8-Digit Driver 



General Description 

The DS8861, DS8863 and DS8963 are designed 
to be used in conjunction with MOS integrated 
circuits and common-cathode LED's in serially 
addressed multi-digit displays. 

The DS8861 is a 5-segment driver capable of 
sinking or sourcing up to 50 mA from each driver. 

The DS8863 is an 8-digit driver. Each driver is 
capable of sinking up to 500 mA. 

The DS8963 is identical to the DS8863 except 
it is intended for operation at up to 18V. 



Features 

■ 50 mA source or sink capability 
per driver, DS8861 



500 mA sink capability 
per driver, DS8863, DS8963 

MOS compatibility (low input current) 

Low standby power 

High gain Darlington circuits 



Schematic and Connection Diagrams 



DS8861 



DS8863/DS8963 








Dua 


-In-Li 


ne Package 






Vss E 


b 1 
17 


s c 

16 


4 E 

IS 


« i 

14 


M 1 
13 


«3 E 
12 


3 C3 
11 10 


re 






Y 








u 


> 


, 


1^ 








r£| 


suts 


i 


2 


3 


• 


; 


6 


7 


• 1' 



« CI El t«1 NC IM2 E2 €2 V D 

TOP VIEW 



Dual-ln-Line Package 

ss INI OUTt IN7 0UT7 ING OUTi INS OUTS 
ly 17 16 15 14 13 12 II 1 10 



L*LfL4 




Order Numbers DS8861N, DS8863N or OS8963N 



132 



OT National 

Slm Semiconductor 

DS8867 8-Segment Constant Current Driver 

General Description Features 



The DS8867 is an 8-segment driver designed to be driven 
from MOS circuits operating at 8V ±10% minimum 
Vgs supply and will supply 14 mA typically to an LED 
display. The output current is insensitive to V cc varia- 
tions. 



(1-i) Ml 

inO— ^*A- 



<*) WOT. 




Internal current control— no external resistors 
100% efficient, no standby power 
Operates in three and four cell battery systems 
Inputs and outputs grouped for easy PC layout 



Schematic and Connection Diagrams 



Dual-ln-Lina Package 

0UT1 OUT 2 OUT 3 OUT 4 OUTS OUT 6 OUT 7 OUT I 



)!>■ 



rtV 



INI IN2 IN3 IN4 INS INS IN 7 INI GND 
TO* VIEW 

Order Number DS8667N 



Typical Application 



OC-DC 
CONVERTER 



Typical 3 Cell Scientific Calculator Circuit 



SEGMENT DRIVE (I) 



* 



MMS7M 
SCIENTIFIC 
CALCULATOR 



DSM67 SE6MENT ORIVER 



NSASK1 LEO DISPLAY 



^aaaaaaaa-BB 



DIGIT DRIVE 14) 



* 



I 



133 



J23| National 

MM Semiconductor 

DS8871, DS8872, DS8873, DS8920, DS8977 
Saturating LED Cathode Drivers 

General Description 



The DS8871, DS8872, DS8873, DS8920 and DS8977 
are bipolar integrated circuits designed to interface 
between MOS calculator circuits and common cathode 
LED displays operating in the multiplexed mode with a 
digit current of up to 40 mA. The DS8871 is an 8-digit 
driver; the DS8920 and the DS8872 are 9-digit drivers; 
and the DS8873 is a 9-digit driver with a built-in battery 
condition indicator that turns on the digit 9 decimal 
point when the battery voltage drops to 6.5V (typical). 
The DS8977 is a 7-digit version of the DS8873. In a 
typical calculator system operating on a 9V battery, 
the low battery indicator comes on as a warning that 



the battery should be replaced. But the calculator 
(MM5737 or equivalent) will still function properly for 
awhile. The DS8920 is identical to the DS8872 in a 
20-pin package. 

Features 

■ Single saturating transistor output 

■ Low battery indicator 

■ MOS compatible inputs 

■ Inputs and outputs clustered for easy wiring 

■ Drivers consume no standby power 



Schematic Diagram 



INPUT O ^W- 

1.2, 3.4. 5. 6.7. 1 



-^^> OUTPUT 
, p 17. 16. IB, 14. 13. 12,' 

>12k I 
I— — •— O GND9 



Connection Diagrams (Dual-ln-Line Packages, Top Views) 



V CC1 V CC2 7 6 5*32 1 

|l« 17 16 16 14 13 12 11 10 




1 2 3 4 5 6 7 It |9 



7 6 5 4 3 2 1 GNO 



INPUTS 

Order Number DS8977N 






AAA 



«CC I 7 6 5 4 3 2 1 

llS 17 16 16 14 13 12 11 10 



AAAAAAAA 



1 2 3 4 5 6 7 | |9 

I 7 6 5 4-3 2 1 GNO 

INPUTS 

Order Number DS8871N 



Vcci N 

I- 




9 
20 


I 

19 


1 
11 


S 

17 


16 


15 


1 

14 


! 1 
13 1 




"CC1 V CC2 
| 2 2 21 


I 

20 


19 


1 
11 


17 


16 


15 


14 


1 
13 12 


) 


I 


i\ 


u 


u 


il 


w 


il 


\1 


4 




'1 


|i 


>\ 


w 


u 


u 


w 


il 


u 


4 


I' 

NC* 


2 


3 


4 


5 


6 

< 


7 


9 


9 


10 |1 

GNO 




1 
OUT 


2 
1 


3 
I 


4 


5 
S 


6 


7 


1 


9 


10 In 

GNO 



INPUTS 

Order Number DS8872N 



INPUTS 

Order Number DS8873N 



134 



HH National 

mm Semiconductor 



DS8877 6-Digit LED Driver 



General Description 



Features 



The DS8877 is a 6-digit LED driver designed as a pin- 
for-pin replacement for the DS75492 in applications 
where digit current is in the 5 to 50 mA range. Since the 
outputs saturate to less than 0.6V, the DS8877 will 
work on lower battery voltages than most digit drivers. 
The DS8877 draws no standby power. 



No standby power 

No supply connection 

Operates in 4.5V, 6V or 9V systems 

Pin-for-pin replacement for DS75492 in low current 

applications 



Logic and Connection Diagrams 



Dual-ln-Line Package 




} 




NC IN 5 0UT 5 IN< 




t 



i' r . 

OUT, 0UT 2 IN, GNO IN 3 0UT 3 OUT, 

TOP VIEW 

Order Number DS8877N 



135 



VWA National 

MjA Semiconductor 



DS8973, DS8974, DS8975, DS8976, DS8978 
9-Digit LED Drivers 



General Description 

The DS8973, DS8974 and DS8976 are 9-digit drivers 
designed to operate from 3-cell (DS8973) or 4-cell 
(DS8974) or 6-cell (DS8976) battery supplies. Each 
driver will sink 100 mA to less than 0.7V when driven 
by only 0.1 mA. Each input is blocked by diodes so that 
the input can be driven below ground with virtually no 
current drain. This is especially important in calculator 
systems employing a dc-to-dc converter on the negative 
side of the battery. If the converter were on the positive 
side of the battery, the converter would have to handle 
all of the display current, as well as the MOS calculator 
chip current. But if it is on the negative side, it only has 
to handle the MOS current. The DS8973 and DS8974 



are designed for the more efficient operating mode. 
The DS8975 is identical to the DS8973, DS8974 and 
DS8976 but does not specify the low battery indicator. 
DS8978 is identical to the DS8975 but is in a 20-pin 
package without low battery pins. 

Features 

■ Nine complete digit drivers 

■ Built-in low battery indicator 

■ High current outputs— 100 mA 

■ Choice of 3 or 4-cell operation 

■ Straight through pin out for easy board layout 



Equivalent Circuit Diagrams 



Typical Driver Circuit 

VCC1 



Typical D.P. Out Circuit 



10k 

input O— *AAr 





^OV C C2 



■O GROUND 



Connection Diagram 

Dual-ln-Line Package 
OUTPUTS 



Dual-ln-Line Package 
OUTPUTS 



V CC1 V B 9 8 7 6 5 4 3 2 1 v ccl V B 9 8 7 6 5 4 3 2 



HliUU; 



12 120 



AAAAA 



AA444444 



Hn 



LOW 98 7 6S4 3 2 1 GNO 

VOLT v » / 

IND '"PUTS 

TOP VIEW 

Order Number DS8973N, DS8974N, 

DS8975N or DS8976N 



987654321 GND 

i » ' 

INPUTS 

TOP VIEW 
Order Number DS8978N 



136 



fjW\ National 

SlA Semiconductor 

LM3909 LED Flashei/Oscillator 



General Description 

The LM3909 is a monolithic oscillator specifically 
designed to flash Light Emitting Diodes. By using the 
timing capacitor for voltage boost, it delivers pulses of 
2 or more volts to the LED while operating on a supply 
of 1.5V or less. The circuit is inherently self-starting, 
and requires addition of only a battery and capacitor 
to function as a LED flasher. 

Packaged in an 8-lead plastic mini-DIP, the LM3909 
will operate over the extended consumer temperature 
range of -25°C to +70°C. It has been optimized for low 
power drain and operation from weak batteries so that 
continuous operation life exceeds that expected from 
battery rating. 

Application is made simple by inclusion of internal 
timing resistors and an internal LED current limit 
resistor. As shown in the first two application circuits, 
the timing resistors supplied are optimized for nominal 
flashing rates and minimum power drain at 1.5V and 3V. 

Timing capacitors will generally be of the electrolytic 
type, and a small 3V rated part will be suitable for any 
LED flasher using a supply up to 6V. However, when 
picking flash rates, it should be remembered that some 
electrolytics have very broad capacitance tolerances, for 
example -20% to +100%. 



Schematic Diagram 



Typical 1.5V Flasher 




Features 

■ Operation over one year from one C size flashlight 
cell 

■ Bright, high current LED pulse 

■ Minimum external parts 

■ Low cost 

■ Low voltage operation, from just over 1V to 5V 

■ Low current drain, averages under 0.5 mA during 
battery life 

■ Powerful; as an oscillator directly drives an 8ft speaker 

■ Wide temperature range 



Applications 



Finding flashlights in the dark, or locating boat 

mooring floats 

Sales and advertising gimmicks 

Emergency locators, for instance on fire extinguishers 

Toys and novelties 

Electronic applications such as trigger and sawtooth 

generators 

Siren for toy fire engine, (combined oscillator, speaker 

driver) 

Warning indicators powered by 1.4 to 200V 



Connection Diagram 



Dual-ln-Lina Package 

SLOW 




T~P — FT 

3k OUT NC V- 

FAST 
RC TOP VIEW 



Typical Application 



fi. h, 



Triac Trigger 



'Wb-ii-ii 




ProvMtt 40 m A. Ifcii puhas M 
(bout 1 1 kHz. Triac fate may bt 
auto tramf ormtr noUNC H 
dtsind. 



-1.4V FROM BATTERY OR 
SOLAR CELL WITH ipF 
■YPASS CAPACITOR. DRAIN 
NOMINALLY S mA. 



137 



££] National 

4jJ Semiconductor 

LM3914 Dot/Bar Display Driver 

General Description 

The LM3914 is a monolithic integrated circuit that 
senses analog voltage levels and drives 10 LEDs, pro- 
viding a linear analog display. A single pin changes the 
display from a moving dot to a bar graph. Current drive 
to the LEDs is regulated and programmable, eliminating 
the need for resistors. This feature is one that allows 
operation of the whole system from less than 3V. 

The circuit contains its own adjustable reference and 
accurate 10-step voltage divider. The low-bias-current 
input buffer accepts signals down to ground, or V~ yet 
needs no protection against inputs of 35V above or 
below ground. The buffer drives 10 individual com- 
parators referenced to the precision divider. Indication 
non-linearity can thus be held typically to 1/2%, even 
over a wide temperature range. 

Versatility was designed into the LM3914 so that 
controller, visual alarm, and expanded scale functions 
are easily added on to the display system. The circuit 
can drive LEDs of many colors, or low-current incan- 
descent lamps. Many LM3914s can be "chained" to form 
displays of 20 to over 100 segments. Both ends of the 
voltage divider are externally available so that 2 drivers 
can be made into a zero-center meter. 

The LM3914 is very easy to apply as an analog meter 
circuit. A 1.2V full-scale meter requires only 1 resistor 
and a single 3V to 15V supply in addition to the 10 
display LEDs. If the 1 resistor is a pot, it becomes the 
LED brightness control. The simplified block diagram 
illustrates this extremely simple external circuitry. 

When in the dot mode, there is a small amount of 
overlap or "fade" (about 1 mV) between segments. This 
assures that at no time will all LEOs be "OFF", and 



thus any ambiguous display is avoided. Various novel 
displays are possible. 

Much of the display flexibility derives from the fact 
that all outputs are individual, DC regulated currents. 
Various effects can be achieved by modulating these 
currents. The individual outputs can drive a transistor as 
well as a LED at the same time, so controller functions 
including "staging" control can be performed. The 
LM3914 can also act as a programmer, or sequencer. 



Features 

■ Bar or dot display mode externally selectable by user 

■ Expandable to displays of 100 steps 

■ Internal voltage reference from 1.2V to 12V 

■ Operates with single supply of less than 3V 

■ Inputs operate down to ground 

■ Output current programmable from 2 to 30 mA 

■ No multiplex switching or interaction between outputs 

■ Input withstands ±35V without damage or false 
outputs 

■ LED driver outputs are current regulated, open- 
collectors 

■ Outputs can interface with TTL or CMOS logic 

■ The internal 10-step divider is floating and can be 
referenced to a wide range of voltages 

The LM3914 is rated for operation from 0°C to +70°C. 
The LM3914N is available in an 18-lead molded (N) 
package and the LM3914D comes in the 18-lead side- 
brazed cavity DIP. 

The following typical application illustrates adjusting of 
the reference to a desired value, and proper grounding 
for accurate operation, and avoiding oscillations. 



Typical Applications 



0V to 5V Bar Graph Meter 




vied 



Note 1: Grounding method is typical of 
all uses. The 2.2 juF capacitor is needed 
if leads to the LED supply are 6" or 
longer. 

Note 2: Supply voltage (V + at pin 2) is 
recommended to be 1 .8V above high sig- 
nal (pin S) and 1 .5V above Reference V 
v* 6.IV-WV ( pin 7 ) for correct operation at 25°C. 



Ref Out V = 1 .25 
i 125 

•led =* 

LEU R1 



(»5) 



138 



CT1 National 

Km Semiconductor 

LM3915 Dot/Bar Display Driver 

General Description 

The LM3915 is a monolithic integrated circuit that senses 
analog voltage levels and drives ten LEDs, LCDs or 
vacuum fluorescent displays, providing a logarithmic 3 
dB/step analog display. One pin changes the display from 
a bar graph to a moving dot display. LED current drive is 
regulated and programmable, eliminating the need for 
current limiting resistors. The whole display system can 
operate from a single supply as low as 3V or as high as 
25V. 

The IC contains an adjustable voltage reference and an 
accurate ten-step voltage divider. The high-impedance in- 
put buffer accepts signals down to ground and up to 
within 1.5V of the positive supply. Further, it needs no pro- 
tection against inputs of ± 35V. The input buffer drives 10 
individual comparators referenced to the precision 
divider. Accuracy is typically better than 1 dB. 

The LM3915's 3 dB/step display is suited for signals with 
wide dynamic range, such as audio level, power, light in- 
tensity or vibration. Audio applications include average 
or peak level indicators, power meters and RF signal 
strength meters. Replacing conventional meters with an 
LED bar graph results in a faster responding, more 
rugged display with high visibility that retains the ease of 
interpretation of an analog display. 

The LM3915 is extremely easy to apply. A 12V full-scale 
meter requires only one resistor in addition to the ten 
LEDs. One more resistor programs the full-scale 
anywhere from 12V to 12V independent of supply voltage. 
LED brightness is easily controlled with a single pot. 



The LM3915 is very versatile. The outputs can drive LCDs, 
vacuum fluorescents and incandescent bulbs as well as 
LEDs of any color. Multiple devices can be cascaded for a 
dot or bar mode display with a range of 60 or 90 dB. 
LM3915s can also be cascaded with LM3914s for a 
linear/log display or with LM3916s for an extended-range 
VU meter. 

Features 

■ 3 dB/step, 30 dB range 

■ Drives LEDs, LCDs, or vacuum fluorescents 

■ Bar or dot display mode externally selectable by user 

■ Expandable to displays of 90 dB 

■ Internal voltage reference from 12V to 12V 

■ Operates with single supply of 3V to 25V 

■ Inputs operate down to ground 

■ Output current programmable from 1 mA to 30 mA 

■ Input withstands ±35V without damage or false 
outputs 

■ Outputs are current regulated, open collectors 

■ Directly drives TTL or CMOS 

■ The internal 10-step divider is floating and can be 
referenced to a wide range of voltages 

The LM3915 is rated for operation from °C to + 70 °C.The 
LM3915N is available in an 18-lead molded DIP package 
and the LM3915J comes in the 18-lead ceramic DIP. 



Typical Applications 



0V to 10V Log Display 



I 

ci | 

2.2 mF I 

TANTALUM — *— 
ORIOmF'T^ 
ALUMINUM I 
ELECTROLYTIC ' 



I \/i/ ]/is \/b< ]/y \a/ wis \f ^y ^ X^ 

I No" X \v Tl6 Ts Il4 Il3 | l2 111 Il0 




3V<V LED <V + 



LM3915 



V + 



"L0 



"HI 



REF 
OUT 



REF 
ADJ 



V BEF = 1.25V 



('^)*° 



V + . 
12V TO 20V 

.08 R2 



12.5 V REF 

'LED = — + 

R1 2.2 



SIGNAL 
SOURCE 




M00E 



VREF 



Not* 1: Capacitor C1 is required if leads to 
the LED supply are 6" or longer. 
Note 2: Circuit as shown is wired for dot 
mode. For bar mode, connect pin 9 to pin 3. 

V LED rnust d 8 ke P* b 6 ' * 7V or droPP'hQ 
resistor should be used to limit IC power 
dissipation. 



139 



5JJ National 



Semiconductor 

MM5421, MM5422 Digital Alarm Clocks 

General Description 



The MM5421, MM5422 digital alarm clock radio chips 
are monolithic MOS integrated circuits utilizing N-chan- 
nel, low threshold, enhancement mode and ion-im- 
planted depletion mode devices. 



The MM5421, MM5422 are bonded in a 22-pin package. 
The MM 5422 has a 24-hour/50 Hz option and the 
MM5421 has the 12-hour/50 Hz or 12-hour/60 Hz 
options. 



Each circuit contains all the logic necessary for a digital 
clock with sleep and alarm control and is intended for 
clock-radio applications. 

Real time and alarm time are displayed in hours-minutes 
and sleep time is displayed in minutes when setting 
the sleep counter. 

An alarm output is provided that "beeps" a ~15% duty 
cycle, 700 Hz signal gated at 2 Hz rate when the alarm 
set time and the real time matches. A sleep output 
that provides a DC level is used to control the radio. 
It is activated with the alarm output or programmed 
via the sleep counter to turn OFF from to 59 minutes 
after the sleep counter is set. 



Features 

■ Duplex LED display drive 

■ Fast/slow set capability 

■ 24-hour alarm 

■ "Snooze" function (9 minutes) 

■ On-chip alarm oscillator 

■ Alarm tone output gated at a 2 Hz rate 

■ Power fail indication-entire display flashes 
1 Hz rate 

■ Automatic power-on reset 

■ PM display indicator 

■ Presettable 59 minute sleep timer 



at a 



A snooze feature is provided for a 9-minute recurrence 
of the alarm after it has sounded. 

Setting is done via the standard fast and slow set buttons 
when in the time set, alarm set or sleep set modes. 
These control inputs are TRI-STATE® inputs to reduce 
pin count. 

The 50/60 Hz clock selects what segment data is on 
the outputs, i.e., a duplex LED display interface. 



Applications 

■ Alarm clocks 

■ Desk clocks 

■ Clock radios 

■ Automobile clocks 

■ Stopwatches 

■ Industrial clocks 

■ Portable clocks 

■ Timers 



Block Diagram 



M/MttaO— • 



REALTIME 
COUNTER 



SLEEP COUNTER 



SNOOZE LOGIC 



ALARM COUNTER 



TIME SET/RUN/ 

ALARM SET 

FAST SET/RUN/ 

SLOW SET 



DISPLAY MUX 
ANO DECODE 



SE6MENT OUTPUTS 
IMMS421: 12 OUTPUTS 
:U OUTPUTS 



n 



n 



V DD 

vss 



ALARM OFF/ SLEEP 
ALARM ON/ OUT 

SLEEP SET 



ALARM 
TONE OUT 



140 



OT National 

£A Semiconductor 

MM5450, MM5451 LED Display Drivers 

General Description 



The MM5450 and MM5451 are monolithic MOS inte- 
grated circuits utilizing N-channel metal gate low thres- 
hold, enhancement mode and ion-implanted depletion 
mode devices. They are available in 40-pin molded or 
cavity dual-in-line packages. Each output can sink up 
to 15 mA at 1.0V maximum output voltage. A single 
pin controls the LED display brightness by setting 
a reference current through a variable resistor connected 
to VqD- 

Features 

■ Continuous brightness control 

■ Serial data input 

■ No load signal required 



■ Enable (on MM5450) 

■ Wide power supply operation 

■ TTL compatibility 

■ 34 or 35 outputs, 1 5 m A sink capability 

■ Alphanumeric capability 

■ Pin compatible to the MM5452, MM5453 LCD drivers 

Applications 

■ COPs or microprocessor displays 

■ Industrial control indicator 

■ Relay driver 

■ Digital clock, thermometer, counter, voltmeter 

■ Instrumentation readouts 



Block Diagram 



BRIGHTNESS 
CONTROL 



I f IMIjiF 

4Zl 



VQD 



PA T AENMIE ) 

OUTPUT IS QHK4S1) 1 



SERIAl . 
DATA 1 



CLOCK fc» 



L 



W 



35 OUTPUT SUFFERS | 



II I i LOAD 

3S LATCHES | « | 

i t tH 

!>— T35BIT SHIFT REGISTER | — |»J"*1 



T 



FIGURE 1 
Connection Diagrams (Dual-ln-Line Packages) 



1 

V$s — 

. 2 

OUTPUT MT 17 —? 

OUTPUT IIT II- 

OUTPUT BIT 15 ■ 

OUTPUT BIT 14 ■ 

OUTPUT BIT 13 ■ 

OUTPUT BIT 12 • 

OUTPUT IIT 11 ■ 

OUTPUT IIT II ■ 

OUTPUT IIT I. 

OUTPUT IIT I' 

OUTPUT BIT 7 

OUTPUT IIT I 

OUTPUT BITS 

OUTPUT BIT 4 

OUTPUT BIT 3 

OUTPUT BIT 2 

OUTPUT BIT 1 

BRIGHTNESS CONTROL 

VOO 



TOP VIEW 

FIGURE 2a 



liL OUTPUT BIT II 

¥- OUTPUT IIT II 
31 



.OUTPUT IIT 21 
OUTPUT IIT 21 
> OUTPUT BIT 22 
OUTPUT BIT 23 
.OUTPUT BIT 24 
OUTPUT BIT 25 
.OUTPUT IIT 21 
, OUTPUT IIT 27 
. OUTPUT BIT 21 

■ OUTPUT BIT 21 

■ OUTPUT BIT 30 

■ OUTPUT BIT 31 

■ OUTPUT BIT 32 

■ OUTPUT BIT 33 
OUTPUT BIT 34 

— DATA ENABLE 

DATA IN 
CLOCK IN 



37 



3b 



23 



OUTPUT BIT 17 
OUTPUT BIT II 
OUTPUT IIT IS 
OUTPUT BIT 14 
OUTPUT BIT 13 
OUTPUT BIT 12 



BRIGHTNESS CONTROL 



141 



OUTPUT BIT II 




TOP VIEW 

FIGURE 2b 



OUTPUT IIT 34 
OUTPUT IIT 31 



gH National 



Semiconductor 

MM5455 Digital Alarm Clock 

General Description 

The MM5455 digital alarm clock radio chip is a mono- 
lithic MOS integrated circuit utilizing N-channel, low 
threshold, enhancement mode and ion-implanted deple- 
tion mode devices. 

The MM5455 contains all the logic necessary for a 
digital clock with sleep and alarm control and is in- 
tended for clock-radio applications. 

Real time and alarm time are displayed in hours-minutes 
and sleep time is displayed in minutes when setting 
the sleep counter. 

An alarm output is provided that "beeps" a 700 Hz 
tone gated by 2 Hz rate when the alarm set time and 
the real time matches. A sleep output that provides 
a DC level is used to control the radio. It is activated 
with the alarm output or programmed via the sleep 
counter to turn OFF from to 59 minutes after the 
sleep counter is set. 

A snooze feature is provided for a 9-minute recurrence 
of the alarm after it has sounded. Setting is done via 
the standard fast and slow set buttons when in the 
time set, alarm set or sleep set modes. These control 
inputs are TRI-STATE® inputs to reduce pin count. 

The 50/60 Hz clock selects what segment data is on 
the outputs, i.e. a duplex LED display interface. 



The MM5455 is bonded in a 24-pin package and is 
capable of 24-hour/50 Hz, 12-hour/60 Hz and 12-hour/ 
50 Hz operations. 

Features 

■ Duplex LED display drive 

■ Fast/slow set capability 

■ 24-hour alarm 

■ "Snooze" function (9 minutes) 

■ On-chip alarm oscillator 

■ Alarm tone output gated at a 2 Hz rate 

■ Power fail indication— entire display flashes at a 
1 Hz rate 

■ Automatic power-on reset 

■ PM display indicator 

■ Presettable 59 minute sleep timer 

Applications 

■ Alarm clocks 

■ Desk clocks 

■ Clock radios 

■ Automobile clocks 

■ Stopwatches 

■ Industrial clocks 

■ Portable clocks 

■ Timers 



Block Diagram 



50/60 Hz O- 



^50 0B 
.60 



REALTIME 
COUNTER 



SLEEP COUNTER 

+ 
SNOOZE LOGIC 



ALARM COUNTER 



TIME SET/RUN/ 

ALARM SET 

FAST SET/RUN/ 

SLOW SET 



DISPLAY MUX 
AND DECODE 



I SEGMENT OUTPUTS (13) 



t t 1 

RC ALARM OFF/ SLEEP 

ALARM ON/ OUT 
SLEEP SET 



V D D 
VSS 



ALARM 
TONE OUT 



142 



ot National 

JlA Semiconductor 

MM5456, MM5457 Digital Alarm Clocks 



General Description 

The MM5456, MM5457 digital alarm clock radio chips 
are monolithic MOS integrated circuits utilizing N-chan- 
nel, low threshold, enhancement mode and ion-im- 
planted depletion mode devices. 



The MM5456, MM5457 are bonded in a 22-pin package. 
The MM5457 has a 24-hour/50 Hz option and the 
MM5456 has the 12-hour/50 Hz or 12-hour/60 Hz 
options. 



Ol 

en 



Ol 

oi 



Each circuit contains all the logic necessary for a digital 
clock with sleep and alarm control and is intended for 
clock-radio applications. 

Real time and alarm time are displayed in hours-minutes 
and sleep time is displayed in minutes when setting 
the sleep counter. 

An alarm output is provided that "beeps" a 50% duty 
cycle, 700 Hz signal gated at 2 Hz rate when the alarm 
set time and the real time matches. A sleep output 
that provides a DC level is used to control the radio. 
It is activated with the alarm output or programmed 
via the sleep counter to turn OFF from to 59 minutes 
after the sleep counter is set. 

A snooze feature is provided for a 9-minute recurrence 
of the alarm after it has sounded. 

Setting is done via the standard fast and slow set buttons 
when in the time set, alarm set or sleep set modes. 
These control inputs are TRI-STATE® inputs to reduce 
pin count. 

The 50/60 Hz clock selects what segment data is on 
the outputs, i.e., a duplex LED display interface. 



Features 

■ Duplex LED display drive 

■ Fast/slow set capability 

■ 24-hour alarm 

■ "Snooze" function (9 minutes) 

■ On-chip alarm oscillator 

■ Alarm tone output gated at a 2 Hz rate 

■ Power fail indication-entire display flashes at a 
1 Hz rate 

■ Automatic power-on reset 

■ PM display indicator 

■ Presettable 59 minute sleep timer 



Applications 

■ Alarm clocks 

■ Desk clocks 

■ Clock radios 

■ Automobile clocks 

■ Stopwatches 

■ Industrial clocks 

■ Portable clocks 

■ Timers 



Block Diagram 



SO/SO Hi O— I ► 



+50 OR 

M 



REAL TIME 
COUNTER 



SLEEP COUNTER 

+ 
SNOOZE LOGIC 



COMPARATOR 



ALARM COUNTER 



TIME SET/RUN/ 

ALARM SET 

FAST SET/RUN/ 

SLOW SET 



DISPLAY MUX 
AND DECODE 



SE6MENT OUTPUTS 
I MMS4SS: 12 OUTPUTS 
MMS4S7: 13 OUTPUTS 



FT 



ALARM OFF/ SLEEP 
ALARM ON/ OUT 
SLEEP SET 

143* 



LEEP ALARM 

)UT TONE OUT 



VDD 
V$S 



g3 National 



Semiconductor 



MM54C48/MM74C48 BCD-to-7 Segment Decoder 



General Description 



The MM54C48/MM74C48 BCD-to-7 segment decoder 
is a monolithic complementary MOS (CMOS) integrated 
circuit constructed with N- and P-channel enhancement 
transistors. Seven NAND gates and one driver are con- 
nected in pairs to make binary-coded decimal (BCD) 
data and its complement available to the seven decoding 
AND-OR-INVERT gates. The remaining NAND gate and 
three input buffers provide test blanking input/ripple- 
blanking output, and ripple-blanking inputs. 



Features 



Wide supply voltage range 


3.0V to 15V 


Guaranteed noise margin 


1.0V 


High noise immunity 


0.45 V cc typ 


Low power 


fan out of 2 


TTL compatibility 


driving 74L 



High current sourcing output (up to 50 mA) 

Ripple blanking for leading or trailing zeros (optional) 

Lamp test provision 



Connection Diagram 





. 




15 


14 


13 


12 


.11 


10 




9 
































C 


> < 


J I 


; 










1 




2 


3 


« 


s 


6 


? 




' 



RB 



RB 



LAMP 

TEST OUTPUT/ INPUT 

BLANKING 

INPUT 

TOP VIEW 



Segment Identification 



n 


i 


~i 


— 


I 


r 




— 


u 


i 


L 







_i 


_i 




12 3 4 5 7 


n 
u 


n 
i 


L 


J 


I I 


r 







I '9 10 II 12 13 14 15 

Numerical Designations 
and Resultant Displays 



144 



OT National 

J^i Semiconductor 

MM54C901/MM74C901 Hex Inverting TTL Buffer 
MM54C902/MM74C902 Hex Non-Inverting TTL Buffer 
MM54C903/MM74C903 Hex Inverting CMOS Buffer 
MM54C904/MM74C904 Hex Non-Inverting CMOS Buffer 



General Description 

These hex buffers employ complementary MOS 
to achieve wide supply operating range, low power 
consumption, high noise immunity. These buffers 
provide direct interface from PMOS into CMOS 
or TTL and direct interface from CMOS to TTL 
or CMOS operating at a reduced V cc supply. For 
specific applications see MOS Brief 18 in the back 
of this catalog. 



Connection and Logic Diagrams 



MM54C901/MM74C901 
MM54C903/MM74C903 




MM54C901 /MM74C901 
CMOS to TTL Inverting Buffer 



Vcc 



... f 



f \ 



MM54C902/MM74C902 
CMOS to TTL Buffer 



trjrn 



'-T^T^ 



Features 

■ Wide supply voltage range 

■ Guaranteed noise margin 

■ High noise immunity 

■ TTL compatibility 



3.0V to 15V 

1.0V 

0.45 V cc typ 

fan out of 2 driving 
standard TTL 



MM54C902/MM74C902 
MMS4C904/MM74C904 




22 



CO ^ 

is 

co-" 1. 



en 2 

4* O 



is 




MM54C903/MM74C903 
PMOS to TTL or CMOS Inverting Buffer 



Vcc 

x r 3 — „ 



MM54C904/MM74C904 
PMOS to TTL or CMOS Buffer 





145 






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©1979 National Semiconductor Corp. IM-TM40MM^ Printed in U.S.A.